Question

Which is an equation of a line through (7,1) and perpendicular to y=-x+3

Answer 1

The answer is y=-1x+8 or you can write it this way y=-x+8 either way will work fine.

Explanation:

y=mx+b

m=-1

y-y=m(x-x¹)

y-1=-1(x-7)

y-1=-1x+7

+1 +1

y=-x+8

I hope this helps:)