Question

Is the point for this equation 3,4?
2x + 2y = 14 3x -y = 4

Answer 1

Plug in the numbers and do the arithmetic:
\[2(3)+2(4) = 14\]\[6+8=14\checkmark\]
but you have to test both equations!
\[3(3)-(4) = 4\]\[9-4\ne4\]Oops. Not a solution of the two equations.

Answer 2

so what are the points?

Answer 3

\[2x+2y=14\]\[3x-y=4\]Multiply the second equation by 2 and add the two equations together:
\[2x+2y=14\]\[6x-2y=8\]--------------
\[8x+0y=22\]
Solve that for \(x\), then determine \(y\) with either of the original equations. I'll check your results for you.