SOLUTION: Can you help me solve the system of equations by graphing? x-y=3 x+2y=18

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Question 288350: Can you help me solve the system of equations by graphing?
x-y=3
x+2y=18

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
That is the worst way to solve.
If the solution isn't whole numbers you can't tell what the answer is.
And even if they look like whole numbers, it doesn't mean they are.
Do each equation separately
let x=0 and find y
let y=0 and find x
draw the line and
then do the other equation
Where they lines cross is the solution(answer)
Fortunately, they all turn out whole numbers.