What is the slope of this line?
A. -2
B. 2
C. 1/2
D. -1/2

The slope is the change in Y over the change in X.
Find 2 points on the line to use:
(-3,0) (0,-6)
Change in Y: -6 - 0 = -6
Change in X: 0- -3 = 3
Slope: -6/3 = -2
The answer is A. -2