Step-by-step explanation:
the slope is the y/x ratio of the x and y coordinate differences when going from one point to the other. it is in the line equation always the factor of x.
(-7, -6) to (3, -6)
x changes by 10 units (from -7 to 3).
y changes by 0 units.
so, the slope is 0/10 = 0
it is a horizontal line at y = -6
(8, 2) to (8, -3)
x changes by 0 units.
y changes by 5 units (from 2 to -3).
so, the slope is 5/0 which is infinite.
it is a vertical line at x = 8
