Download presentation
Presentation is loading. Please wait.
Published byGwen Sullivan Modified over 9 years ago
1
Warm Up h(-8) What value of x would make h(x) = 7?
Given h(x) = find the following: h(-8) What value of x would make h(x) = 7? What value of x would make h(x) = -3?
2
HW Check – 4.1
3
Slope of a line
4
What is the meaning of this sign?
Icy Road Ahead Steep Road Ahead Curvy Road Ahead Trucks Entering Highway Ahead
5
What does the 7% mean? So, what is the meaning of slope???
7% is the slope of the road. It means the road rises 7 feet vertically for every 100 feet horizontally. 7 feet 100 feet So, what is the meaning of slope??? Slope is the steepness of a line.
6
1) Determine the slope (rate of Change) of the line.
When given the graph, it is easier to apply “rise over run”. Rise – is the vertical change. Run – is the horizontal change.
7
Find the slope: 2) 3)
8
A line has a positive slope if it is going uphill from left to right.
Slope can be expressed different ways: ****Slope is the same as rate of change**** A line has a positive slope if it is going uphill from left to right. A line has a negative slope if it is going downhill from left to right.
9
When given points, it is easier to use the formula!
2) Find the slope (rate of change) of the line that passes through the points (-2, -2) and (4, 1). When given points, it is easier to use the formula!
10
Find the slope (rate of change) of the line that passes through (3, 5) and (-1, 4).
11
You try! Find the slope of the line that goes through the points (-5, 3) and (2, 1).
12
What is the slope of a horizontal line?
H0y The line doesn’t rise! All horizontal lines have a slope of 0.
13
What is the slope of a vertical line?
VuX The line doesn’t run! All vertical lines have an undefined slope.
15
VuX and H0y VuX: Vertical lines have undefined slope with an equation x = a number. HOy: Horizontal lines have zero as their slope with an equation y = a number.
16
Draw a line through the point (2,0) that has a slope of 3.
1. Graph the ordered pair (2, 0). 2. From (2, 0), apply rise over run (write 3 as a fraction). 3. Plot a point at this location. 4. Draw a straight line through the points.
17
Homework: 4.2 Quiz Friday!
Similar presentations
© 2024 SlidePlayer.com Inc.
All rights reserved.