y = mx + b
m is the slope and b is the y intercept
to find the slope with two points given, you subtract the two y values over the two x values (y-y) / (x-x)
-5 - (-1) = -4
2 - 3 = -1
-4 / -1 = 4
m = 4
Now to find b, you plug in a value of x and a value of y that you already know.
-5 = 4(2) + b
-5 = 8 + b
-13 = b
y = 4x - 13
[B] 4x - y = 13
- y = -4x + 13
y = 4x - 13
