Consider the following equation.

Question

2x−2y=17

Step 1 of 2 :  

Determine the missing coordinate in the ordered pair (−1,?) so that it will satisfy the given equation.

Answer 1

The first coordinate represents our x value. The second coordinate represents our y value.

We know that x = -1 and that x and y are related to each other by 2x - 2y = 17. Plugging in x = -1 into this equation, we get

2(-1) - 2y = 17

-2 - 2y = 17

-2y = 19

y = -19/2.