Answer:
C. 0
Step-by-step explanation:
The slope of any horizontal line on a graph is zero. Pick any two points on the line, let's say (-2, -3) and (2, -3). Plug those into the slope formula (y2-y1/x2-x1) and we have -3-(-3)/2-(-2). That simplifies into -3+3/2+2, which then becomes 0/4 and turns out to be 0.
