Answer: all of the above
Explanation:
This is a system of equations. You have different ways to solve these: substitution, elimination or graphing
Using elimination seems the easiest to me.
You will eliminate the "y"

Now solve

Divide by 2

Take the square root. Remember when you take the square root you get a positive answer and a negative answer
and

Now, plug that back in to one of the original equations to find y.


subtract 5

Divide by -1

Square root (and remember the positive/negative)
and

So:

BUT you still need to plug in





and

So:

The correct answer is all 4 of those choices!