Slope-intercept form: y = mx + b
[m is the slope, b is the y-intercept or the y value when x = 0 ---> (0, y) or the point where the line crosses through the y-axis]
Since you know m = -4, plug it into the equation
y = mx + b
y = -4x + b To find b, plug in the point (-2, -5) into the equation
-5 = -4(-2) + b [two negative signs cancel each other out and become positive]
-5 = 8 + b Subtract 8 on both sides to get "b" by itself
-13 = b
y = -4x - 13
