Question

Slope is 1 and (-2,-1) is on the line

Answer 1

y = x + 1

Explanation:

Since slope is 1, then the equation will be formatted as y = x+b, since m is 1. Now we need to solve for b, since we're given a coordinate that is on the line, replace x and y for these two points to solve for b.

y = x + b (subsitute)

-1 = -2 + b (add 2 to both sides)

1 = b

So your final equation is y = x + 1.