Is (-2, 4) an ordered pair for the equation 3x - y = 4

Question

Oordered pair (-2,4) for solution 3x-y=4

I can not figure out how to even come up with this answer.

Answer 1

Does your ordered pair make the equation true? Temember that a point is (x,y).

3(-2) - 4 = 4

-6 - 4 = 4

-10 = 4

-14 = 0

Well, that's not true, so no, (-2,4) is not an ordered pair for the equation.

Answer 2

The ordered pair (-2,4) means x = -2, y = 4. Just plug those values of x and y into the equation. If you end up with 4 = 4, then (-2,4) is an ordered pair of the equation. If you end up with nonsense, such as -10 = 4, then (-2,4) is NOT an ordered pair of the equation.