[0,-1]and[2,-3]
Slope intercept general form is y = mx + c, where m is slope and c is y-intercept.
Here we have:
-1 = m*0 + c, so that c = -1
and
-3 = m*2 -1 so that 2m = -2 so m = -1
y = -x - 1
.
