The list of choices you've provided doesn't include any solution.
x = 1 and y = 2
2x plus 3y
{-1,-2}
There are two solutions and they are: x = -1 and y = 3
x = 3, y = 3
X = 6
x=2
x = 0
x=-2
x = -5
The answer is (3.5)2 plus (4)2 equals 410.
2x - y = 15 2x + 3y = -21 As you observe both equations (having different slopes), you see that the system is consistent, and it has only one solution.