Which equation is the equation of a line that passes through (-10,3) and is perpendicular to y=5x-7?

1- y=5x+53
2- y=-1/5x -7
3- y= -1/5x +1
4- y= 1/5x +5

1 answer

(-10,3), m = -1/5.

Y = mx + b

Y = 3
m = -1/5
x = -10
Solve for b(y-intercept).