Thread: How to find if the Given Pair is a Solution to the Equation

Hey, y'all, I'm having some trouble with some math homework (which means I'll probably be posting more threads here shortly), and I was wondering if you guys could give me some help on figuring out how to work this problem.

BTW, this chapter is on graphing and application of linear equations.


Determine whether the given ordered pair is a solution of the equation.


(4,2); 2x+3y=12


I've been doing similar problems, but this one through in an extra number that I honestly have no idea what to do with. Here's an example of one of the problems I did good with:

(1,7) y=2x+5
7=2*1+5
2+5=7
TRUE

One the problem I'm having trouble with, that 3 in front of the Y is throwing me off. What am I supposed to do with it? Thanks for the help.

Originally Posted by El-Cid

One the problem I'm having trouble with, that 3 in front of the Y is throwing me off. What am I supposed to do with it?

um, you multiply it. just as you did with 2x in the example you showed