Presentation on theme: "Unit 1: Honors Precalculus"— Presentation transcript:
1Unit 1: Honors Precalculus Lesson 1: Standard 1.1 and 1.2 (1-1, 1-2)Lesson 2: Standard 1.3 (1-3, 1-4)Lesson 3: Standard 1.3 and 1.4 (1-5, 1-7)Lesson 4: Standard 1.3 (1-6)Lesson 5: Standard 1.6 (1-8, 2-6)Lesson 6: Standard 1.5 (2-1, 2-2)
2Welcome to Precalculus! Mrs. Bunting Room C109 Get an index card and your handouts.Pick up a textbook (Rust with spiral on front)Find your seat on the seating chart and take your seat. Fill out your index card.Please begin to work on reviewing the material in Section 1-1 of your book.Use your textbook and tablemates to help yourself review this material.You will need to TAKE NOTES on the material.Complete p 10 #17 – 37 odd, all
3By the time you and your group finish you will answer… Standard 1.1: distinguish between relations and functions, identify domain and range, and evaluate functions (Section 1-1) p 10 #17 – 37 odd, allBy the time you and your group finish you will answer…What is a relation?What is contained in the domain of a relation? In the range?What is a function and how is it different from a relation?What is the vertical line test and what is it used for?What does function notation look like?How are functions evaluated for specific values?
4What is Honors Precalculus? You will be introduced to:Higher level algebra skills!Common and Natural Logarithms!Limits!Arithmetic, Geometric and Infinite Series!Polynomial, Rational and Exponential Functions!Lots of Trigonometry!Rectangular and Polar Coordinates!not necessarily in that order…
5What Can I Expect? We will cover at least a section a day. We will complete a unit pretty much weekly.Each quarter will have several portfolio projects.You can expect to have Precalculus work to do every single night.
6In a nutshell: To Do Well: Grading to Standards: 1. You need to master EVERY standard to pass.2. Any standard which you do not pass must be reassessed.To Do Well:1. Complete your homework It is your ticket to reassess.2. Reassess promptly while things are fresh.
7Extra HelpTutorial – right here in C109! Everyday but Tuesday (Library Duty)Got Math?3C in C211 Ms Kielkucki3D in C106 Ms Ciliano4C in C104 Mr. Lisella4C in C100 Ms Rohrer4D in C100 Ms Bunting
8In this unit we will complete… Unit 1: “Get in Line”In this unit we will complete…Standard 1.1: distinguish between relations and functions, identify domain and range, and evaluate functions (1-1)Standard 1.2: perform operations (add, subtract, multiply, divide, compose) on functions (1-2)Standard 1.3: analyze graphs and make predictions based on linear functions (1-3, 1-4, 1-5, 1-6)Standard 1.4: graph and interpret piecewise functions (1-7)Standard 1.5: solve systems of equations (2-1, 2-2)Standard 1.6: solve systems of linear inequalities (1-8, 2-6)
9Standard 1.1 (continued): Using the Vertical Line Test and Stating The Domain From A Graph (1-1) xyxy
11Standard 1.1: Finding the Domain of a Function in Equation Form (1-1) To find out what the independent (x) values for a function will be involves finding out what they cannot be.There are TWO Bozo No-No’s:No values which cause zero’s in denominatorsNo values which cause a negative under a square root (or any even root)
12Find the values for x which are not in the domain of the function, then state the domain in proper set notation.
13Find the values for x which are not in the domain of the function, then state the domain in proper set notation.
14Find the values for x which are not in the domain of the function, then state the domain in proper set notation.
15Find the values for x which are not in the domain of the function, then state the domain in proper set notation.
16When we finish this lesson you will be able to … Standard 1.2: perform operations (add, subtract, multiply, divide, compose) on functions (1-2)When we finish this lesson you will be able to …Perform basic math operations with functionsCreate, use and check composite functions
26Homework: HW 1.1: p 10 #17 – 47 odd, 48-50 all For Tomorrow:HW 1.1: p 10 #17 – 47 odd, allHW 1.2: p 17 #11 – 23 odd, 31By Monday:Cover bookGet your binder or notebook setupGet parental form turned in
27Warm-Up:P 25 #41Have your homework out to be checked!
29At the end of this lesson you will be able to… Standard 1.3: analyze graphs and make predictions based on linear functions (1-3,1-4)At the end of this lesson you will be able to…Identify and properly use the three forms of linear equationsFind x- and y-interceptsDefine, identify and use the formula for slopeIdentify the two special cases of slope
30Linear Functions What does a linear equation look like? Are all the equations of lines also functions?How many of the forms do you remember?
32Standard Form: Where A, B and C are numbers like this. In this form you can tell what about the line?Nothing.
33Slope-Intercept Form Where m is… And b is… In this form you can… Tell exactly what the line looks likeGraph the line
34Point-Slope Form:Used to develop the linear equation if you know the slope, m, and one point on the graph, (x1, y1).Find the standard form of the equation of the line which has a slope of -1 and passes through the point (-4, 5).
35What if you only have two points on the graph? Find the standard form of the equation which passes through the points (6,5) and (4,-5).Find slope.Use slope and one of the points to find equation of the line.
43By the end of this lesson we will be able to answer… Standard 1.3: analyze graphs and make predictions based on linear functions (1-5)By the end of this lesson we will be able to answer…How can parallel and perpendicular lines be identified from their equations?How can the properties of lines be used to identify geometric figures?How can the coefficient for an equation be found so that it will be parallel or perpendicular to a specific line?
44Parallel and Perpendicular Lines Parallel lines have the same slopePerpendicular lines have slopes which are negative reciprocals of each other.Find the equation of the line parallel to the equation above and passing through (2,-2)Find the equation of the line perpendicular to the equation above and passing through (-4,1)
45Special Case:Lines which have the same slope and the same y-intercept are called coinciding.
46Slope and Distance:Consider the polygon with vertices at (0,0), (1,3), (3,-1) and (4,2).Is it a parallelogram?Is it a rectangle?
47Are these lines parallel, coinciding perpendicular or none of these? neitherparallelcoincidingperpendicular
62In this section we will… Standard 1.3: analyze graphs and make predictions based on linear functions (1-6)In this section we will…Draw and analyze scatter plots.Draw a best-fit line and write a prediction equation.Solve problems using prediction equation models.
63Collecting and Using Data: Real life data seldom forms nice straight lines or smooth curves.For graphs which approximate a line, a best-fit line (also called a regression line) can be drawn and a prediction equation can be determined.
64Scatter Plots: p 38 Basically, data is the graph of a relation. If the graph shows a linear trend you can create a prediction equation.Accuracy of predictions depends on how closely the data approximates a line.
65Correlation: p 40This refers to how closely a set of data actually approximate a line.If the data is very scattered, that is a weak correlation.If the data is very close to being on a line then it has a strong correlation.Our example had moderate correlation.
66More About Correlation: p 40 Correlation is measured using a correlation coefficient (r).r < ½ means weak, ½ < r < ¾ is moderate, ¾ < r < 1 is strong.One means complete correlation.NOTICE: r is positive for positive slopes and negative for negative slopes.
67The Prediction Equation: Graph your data.Draw a best-fit line.Chose two points, on the line.Find their slope.Use the slope and one of the points to find the prediction line.
68Regression Lines on the Calculator: Go to STAT, choose EDIT, and enter the x-values in L1 and the y-values in L2.Go to STAT PLOT (2nd, Y=), press ENTER on 1:Plot 1, and turn Plot1 On.Go to WINDOW, and adjust your Xmin, Xmax, Ymin, and Ymax to fit your data.Go to GRAPH to see your points plotted.Go to STAT, choose CALC, arrow down to highlight the appropriate regression model, and press ENTER. Press L1 (2nd, 1), the comma (above the 7), L2 (2nd, 2), the comma again, then VARS, choose Y-VARS, choose Function, choose Y1, and press ENTER.Go to Y= to see that your equation has been transferred to the Y= screen.Go to GRAPH to see your line.To enter an x-value and find the corresponding y-value, go to CALC (2nd, TRACE) and choose 1:value. Enter the x-value, and the y-value will be provided.To enter a y-value and find the corresponding x-value, go to Y= and next to Y2 graph the line y=a, where a is the y-value in which you are interested. Then go to CALC (2nd, TRACE) and choose 5:intersect. Press ENTER three times, and the point of intersection will be provided.NOTE: You may need to change your viewing window to accomplish steps 8 and 9.
69Now…do it yourselves. Use the data your group was given. Paste the chart with your data and plot your points on the large sheet of graph paper.Draw a best-fit line.Choose two points on your line and determine your prediction equation. Show all work on the graph paper. Label it “Hand Calculated Equation”Finally, use the graphing calculators to find the regression equation. Record it on the graph paper and label it “Calculator Generated Equation”.Make sure that you allow enough room on the paper to answer your questions.
82Standard 1.6: Solve systems of linear inequalities (2-6) At the end of this section you should be able to …Find the solution for a system of inequalities using a graphGraph a polygonal convex setFind the vertices for a polygonal convex setFind the minimum and maximum values for a polygonal convex set
83How can the solution for a system of inequalities be determined using a graph?
84What is a polygonal convex set? A polygonal convex set is the solution for a system of inequalities.The solution is contained within the polygon formed by the boundaries of the inequalities.
85First graph the inequalities and determine the polygonal convex set.
86How do I find the vertices for a polygonal convex set?
87How can I find the minimum and maximum values for a polygonal convex set?
90One more!The Cruiser Bicycle Company makes two styles of bicycles: the Xenon, which sells for $200, and the Yaris, which sells for $600. Each bicycle has the same frame and tires, but the assembly and painting time required for the Xenon is only 1 hour, while it is 3 hours for the Yaris. There are 300 frames and 360 hours of labor available for production. How many bicycles of each model should be produced to maximize revenue, and how much money will be made?
91Homework: Grab graph paper! HW1 1.6: P55 #9 – 21 every other odd and #23HW2 1.6: P110 #9 – 21HW3 1.6: P117 #15Look for a Unit 1 Test on Tuesday 2/15!!!Portfolio 1 due on Wednesday 2/16!!!
94Standard 1.5: solve systems of equations (2-1, 2-2) In these sections we will…Solve systems of equations involving two variables algebraically.Solve systems of equations involving three variables algebraically.You will need a ruler and a piece of graph paper.
95What does the solution for a system of linear equations represent?
96How Can We Solve a System? GraphingEliminationSubstitution
98Terminology:If lines intersect: ONE solution a.k.a. consistent and independentIf same line twice: INFINITE solutions a.k.a. consistent and dependentIf lines are parallel: NO solution a.k.a. inconsistentWhat were your graphs?
101Solving Systems in 3 Variables A system in 3 variables represents the intersection of 3 planes.Look at page 73.You need 3 equations to solve.You have to have the same number of equations as you have variables.Solve using substitution or elimination.
102Let’s try some…How should the solution be written?
106Now…YOU think.Write a system of 3 equations that fits each description.The system has a solution of x = - 5, y = 9 and z = 11.There is no solution to the system.The system has an infinite number of solutions.
107Homework:HW1 1.5: P 71 #22 – 25 allHW2 1.5: P 76 #9, 11 and 13UNIT 1 Test on Tuesday 2/15Portfolio 1 due Wednesday 2/16