In two or more complete sentences, describe how the substitution method works for solving a two-order system of equations.

The first step is to set one equation equal to x or equal to y.

Ex. y = ___ or x =

The next step is to substitute that equation into the second equation in place of the x (or y), whichever you set it equal to.

Ex. x + y = 3

    2x + y = -1

y = -x + 3      2x + (-x + 3) = -1

                      x + 3 = -1

                      x = -4

y = -(-4) + 3    y = 7    (-4,7)

Step-by-step explanation:

- both graphs increase on their domain.

- the graphs of both functions have the same x-intercept.

- neither graph has a y-intercept.

probably the last option

step-by-step explanation: