Equations in two variables

Question

Is (-2,3) a solution to the following equation. 3x+4y=8

Answer 1

Hi Brittney,

We can check this by plugging in the point you gave us.

When a point is represented as (-2,3) this means that the first number (-2) is x and the second (3) is y. We can then plug these into your equation to check if it is a solution.

3x + 4y = 8

3(-2) + 4(3) = 8

-6 + 12 = 8

6 = 8

Clearly 6 does not equal 8 so it is not a solution.

Matt

Answer 2

3(-2) + 4(3) = -6 + 12 = 6

No it is not