Solve y=-x+2 and y=-2x-1 as a graph, substitution, or elimination?

( - 3, 5)

Step-by-step explanation:

Given the 2 equations

y = - x + 2 → (1)

y = - 2x - 1 → (2)

Using substitution method.

Substitute y = - x + 2 into (2)

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

x + 2 = - 1 (subtract 2 from both sides)

x = - 3

Substitute x = - 3 into (1)

y = - ( - 3) + 2 = 3 + 2 = 5

Solution is ( - 3, 5)