1. 5-3 slope-intercept form

2. Slope-intercept form of a line
A line can be written in the form y = mx + b m = slope b = y-intercept (where the line crosses the y axis)

3. To Graph
To graph y = mx + b
Plot the y-intercept on the graph first
From there, use the slope to find other points

4. Find slope and y-intercept and graph
a) y = 3 4 x b) y = -5x + 3

5. Writing slope intercept form given (m) and (b)
a) m = 7, b = b) m = , b = 9

6. Slope intercept for when given two coordinates
Steps:
Use the points to find the slope (m)
Use the slope and one of the coordinates to solve for the y-intercept (b).
Put the slope and y-intercept into the equation y = mx + b.

7. examples
a) (3,5), (0,4) b) (-1,3), (-3,1) c) (3,2), (-1,6)

8. Homework
Page 147
2-30 even