The answer would be d) y + 5 = -3(x - 1); y = -3x - 2 The answer is d because you would find the slope by doing y2 - y1 / x2 - x1 ( 7 + 5 / -3 - 1 ) which equals -3. You would use your first coordinate and the slope -3 then plug that into the point slope formula ( y + 5 = -3(x - 1) ). If you simplify that equation you would get y = -3x - 2