Question

Find an equation of the line containing the given pair of points. (-1,-7) (-9,-8)

Answer 1

D : y = ax + b
a = (-8 + 7) / (-9+ 1) = 1/8
D : y = (1/8)*x + b
-7= (1/8)*(-1 ) + b 
b = (1/8)*(-1 ) + 7 = -55/8
D : y = (1/8)*x - (55/8)