I've pretty much forgotten everything, but I know how to plot points. I have the answers, but I want to know how to do it. Help me out. This leads into problem 11. There is a whole page of this stuff.
Help is appreciated quickly.
Solve each of the following systems of equations by linear combination. Check the solution by placing the ordered pair in both equations. Thanks in advance. I use to know all this stuff, but last year I did geometry and forgot most of this stuff. Please don't give me the anwsers, but show me what to do and why your doing it.