The slope is the change in Y over the change in X
Label each point (x1,y1) and (x2,y2)
Slope = y2 - y1 / x2-x1
Slope = -7 - (-11) / -6 - (-1)
Slope = -7 +11 / -6 +1
Slope = 4 / -5
Move the negative sign in front:
Slope = -4/5
