which equation represents a line with slope -2 and passes through(-1,5)?

Question

how do you do this?

Answer 1

There are a couple ways to do this problem.

One way:

y-y1 = m(x-x1)
y - 5 = -2(x - (-1)
y - 5 = -2(x+1)
y = -2x -2 +5
y = -2x +3

Answer 2

so the answer is 2x-y=3?