Answer:
Step-by-step explanation:
First, find the slope:
m = (y2 - y1) / (x2 - x1)
m = (-1 - 7) / (-1 - 3)
(-8) / (-4)
m = 8/4
m = 2
Now we use the point-slope formula:
y - y1 = m(x - x1)
It doesn't matter which coordinate we use, so I'll use (-1, -1):
y - (-1) = 2(x - (-1))
y + 1 = 2(x + 1)
y + 1 - 2x + 2
y = 2x + 1
