Answer:
y = x + 12
Explanation:
(-9, 3), (-5, 7)
(x₁, y₁) (x₂, y₂)
y₂ - y₁ 7 - 3 4 4
m = ------------ = ------------- = ----------- = --------- = 1
x₂ - x₁ -5 - (-9) -5 + 9 4
y - y₁ = m(x - x₁)
y - 3 = 1(x - (-9)
y - 3 = 1(x + 9)
y - 3 = x + 9
+3 +3
-------------------------------
y = x + 12
I hope this helps!