Question

Find an ordered pair (x, y) that is a solution to the equation.

-x+2y=7

(x, y) = (_, _)

Answer 1

To answer this, you get to pick any x-value and then solve for y OR you can pick any y-value and solve for x.

For this one, let's pick x = 3. We'll then substitute 3 in for x in the equation:

- (3) + 2y = 7

and then solve for x:

-3 + 2y = 7

Add 3 to both sides:
2y = 10

Divide by 2 on both sides:
y = 5

This shows that (3,5) is a solution for the equation.

Again, you could pick any x-value and solve for y OR pick any y-value and solve for x. There are an infinite number of solutions.