Question

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

Answer 1

Hint: Perpendicular means the slope is an opposite reciprocal

m=-1/5

Plug in (-10,3) to a regular formula y=mx+b

3=(-1/5)*-10+b
3=2+b
-2-2
1= b

y=-1/5x+1

Answer: 3