1. 13.4 Graphing Lines in Slope-Intercept Form
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2. Intercepts of Graphs
x-intercept: the x coordinate of a point where a graph crosses the x axis
y-intercept: the y coordinate of a point where a graph crosses the y axis

3. Example 1
Identify the x- and y-intercepts of the graph below.

4. Slope-Intercept Form

5. Graphing Put equation into slope-intercept form. Plot the y intercept.
Move from the y intercept according to the slope.
Move up or down according to the numerator (positive means up, negative means down)
Move to the right according to the denominator (not left!)
Draw a line through the points.

6. Example 2
Find the slope and y-intercept of Then graph the equation and identify the x-intercept.

7. Example 3
Find the slope and y-intercept of Then graph the equation and identify the x-intercept.

8. Example 4
Find the slope and y-intercept of Then graph the equation and identify the x-intercept.

9. If given a graph, you can write an equation in slope-intercept form.
Example 5