x-3y=-7
A.(2,-1) B.(2,4) C.(-1,2) D.(2,3)
A.(2,-1) B.(2,4) C.(-1,2) D.(2,3)
You just need to plug in the numbers for x and y and see if the resulting equation is true. Remember in each ordered pair, the first number is the x value, and the second number is the y value.
For example with the first pair (2,-1) the equation becomes:
2 - 3*(-1) = -7.
Ask yourself: Is this equation true?
If so then circle the pair (2,-1), otherwise leave it uncircled.
Then repeat this with each of the other three pairs.