Determine the equation of the line containing the points (-2,5) and (-1,6)

Question

f) y = x + 7
g) y = -x + 5
h) y = -x + 7
j) y = 1/3x + 19/3
k) y = x + 5

I know it must be either f) or k), because I figured out that the slope is 1. But it never mentions about the y-intercept, so is it 5 or 7, and how would I find it?

Thank you!

Answer 1

You are right about the slope, so you are down down two choices.
substitute the points into those remaining equations to see which is the correct one