What is the slope of a line that passes through (-1, 8) and (-1, -7)?

100 points, hi, i’m not sure how to get the equation from the graph and table.

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Suppose a gym membership has an initial enrollment fee of $75 and then a fee of $29 a month. which equation models the cost, c, of the gym membership for m months?