I forgot how to do this:

Answer:
Slope = -9/2
Two points are (-2,9) and (2,-9)
Step-by-step explanation:
The two points the equation should go through are (-2,9) and (2,-9), (Dark Green and Light Blue).
The slope-intercept is calculated using the two points above;
-9 - 9 = -18
2 - (-2) = 4
Slope = -18/4 or -9/2
Hope this helps!