Question

the ordered pair is (-1,1) is that a solution of
-4x+2y=2
x+y=-2
yes or no?

Answer 1

okay so in order to find that substitute -1 into x and if y comes out to be 1 then yes it's true
but it should be done for both equations inorder to find out

Answer 2

I do not think so and here is why. When you manipulate the first equation you should get an equation that looks like y = (2+4x)/2 which is the same as y = 2x +1 in simplified form. The second equation is y=-2-x. If you plug in -1 into the x's of both of these equations you get y = -1 NOT 1. So no I do not think the ordered pair for these equations is (-1, 1) rather the correct ordered pair is (-1, -1).

Answer 3

You have at least two choices here:
1) You could substitute x=-1 and y=1 into both equations separately; if both equations are then true, then (-1,1) is a solution of the system of linear equations

-4x+2y=2
x+y=-2


OR

You could solve the system of linear equations

-4x+2y=2
x+y=-2

and determine whether or not the given (-1,1) matches your solution.

Which will it be?

Answer 4

so nope