Answer:
y = 2x-20
Explanation:
Slope intercept form of a line is
y = mx+b where m is the slope and b is the y intercept
y = 2x +b
Substitute the given point in
-2 = 2 ( 9) +b
-2 =18+b
Subtract 18 from each side
-2 -18 = 18+b-18
-20 = b
The equation is y = 2x-20