Answer: choice A) -8/5
=====================================================
Work Shown:
Use the slope formula which basically says you subtract the y coordinates, then subtract the x coordinates in the same order, then you divide the results (reduce if possible)
m = (y2-y1)/(x2-x1)
m = (-1-7)/(4-(-1))
m = (-1-7)/(4+1)
m = -8/5
