Question 315602
We first find the slope.

Let m = slope

m = (3 - 1)/(-1 -(-3))

m = 2/(-1 + 3)

m = 2/2

m = 1

The slope is 1.

We now use the point-slope formula.

y - y1 = m(x - x1)

Pick one of the given points and the slope 1 to plug into the poitn-slope formula.

y - 1 = 1(x - (-3))

y - 1 = 1(x + 3)

y - 1 = x + 3

y = x + 3 + 1

y = x + 4

Done!