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Algebra II/Trig Mrs. Brady

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Important notes Please bookmark our website password is bears http://teacherweb.com/GR/HeidHS/Brady/ I will post notes, assignments and bonus questions Quizzes will mostly be online. –Quizzes will be online at my moodle site (link from our class website). You will need to register at the following site and bookmark it. Brady’s Crucible. http://iteach.org/sbrady/moodle/course/index.php Our class is Brady Algebra 2/Trig. Enrollment key is bears http://iteach.org/sbrady/moodle/course/index.php –Do not miss the deadlines. There are no makeups! Generally they are open for one week from Wed to Wed on the crucible. –You may take the quizzes as many times as you want during the week interval –I will drop your lowest 2 at the END of the semester.

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More notes Homework is graded for completion and process. –Due at the beginning of class…must be complete with work shown. No work = 0 points. –Don’t skip the word problems (-1 for every w-p skipped) –Integrity….don’t take credit for someone else’s work –Each assignment is 10 points. –Late work is 50% until test day, needs a z slip –Write # for Problems you need help with on class whiteboard Tests will be every 2-2.5 weeks. –Show all work in standard mathematical notation –Neatness counts…if I can’t read it I will mark it wrong. –Yes, there will be word problems…

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Answers to common questions Everything since kindergarten is on the test

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Answers to common questions There will be a bonus question posted online for each test Can I have extra credit?

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Things that really annoy Mrs. Brady Eating/drinking in my class Talking when I’m talking Ipods and cell phones in my class Tardiness…yes I will mark you tardy and hold you accountable Packing up before I dismiss you If you can not remember how to do Algebra, then LOOK IT UP! This is not an Algebra I class. If you were absent, then look at our website to find out what we did. Life goes on without you….and so does class! Don’t wait and whimper… If you need to ask a question, then please do not make a declarative statement. No Whining… and on that note...

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Evaluate 7 + 4 3. You can get 2 different answers depending on which operation you did first. We want everyone to get the same answer so we must follow the order of operations. Is your answer 33 or 19?

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Remember the phrase “Please Excuse My Dear Aunt Sally” or PEMDAS. ORDER OF OPERATIONS 1. Parentheses - ( ) or [ ] 2. Exponents or Powers 3. Multiply and Divide (from left to right) 4. Add and Subtract (from left to right)

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Once again, use PEMDAS to evaluate 7 + 4 3 = 7 + 12(Multiply.) = 19 (Add.)

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Example #1 20 - 3 6 + 10 2 + (6 + 1) 4 = 20 - 3 6 + 10 2 + (7) 4(parentheses) = 20 - 3 6 + 100 + (7) 4(exponents) = 20 - 18 + 100 + (7) 4 (Multiply l/r.) = 20 - 18 + 100 + 28 (Multiply l/r.) = 2 + 100 + 28 (Subtract l/r.) = 102 + 28 (Add l/r.) = 130(Add.) Can you combine any steps? Do all M/D left to right The do all A/S left to right

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Equation Solving Solve the following 3 equations. How are they different? How are they the same? 1.2x + 6 = 6 - 4x 2. 5(x - 4) = 5x + 12 3.5(2 – x ) = 3 – 2x +7 - 3x

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1. 5X – 10 + 2X = 3(X-1) 2. Solve me! We love fractions!! x = 7/4 X=2

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Let’s try solving for x Solve the equation -4x + y = -36 for x. Ask: What is the first thing being done to the x? Multiply by -4. What is the next thing done to x? –Add y To undo – then we should …..subtract y, divide by -4

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-4x + y = -36 -y -y -4x = -36 – y (can’t combine) -4 x = 9 + y/4

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Here’s a tricky one! Solve 3ax - b = d - 4cx for x. First, we must get all terms with x together on one side. –Add 4cx to both sides Next, use the distributive property to factor x out of the two terms on the left. Add b to both sides To undo this, divide both sides by (3a + 4c). 3ax - b = d - 4cx +4cx 3ax+4cx - b = d x(3a+4c) - b = d +b x(3a+4c) = d + b 3a+4c

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Which of the following represents 11 2 + 18 - 3 3 · 5 in simplified form? 1.-3,236 2.4 3.107 4.16,996

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Simplify 24 – 6 · 4 ÷ 2 1.72 2.36 3.12 4.0

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Lesson Close How do we remember Order of Operations?

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Use order of operations Evaluate algebraic expressions.

Use order of operations Evaluate algebraic expressions.

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