use elimination to solve 3y=3x-6 and y=x-2

Question

freckles · Answer

multiply the second equation by 3 you should see something neat

triciaal · Answer

to use elimination pick one of the variables and find factors to multiply each eqn so that the coefficients are opposites and when added the variable disappears. you will then have a one variable equation to solve. with this solution put in either of the original equations to find the value of the other variable.

jigglypuff314 · Answer

@acmorgan a potential problem you might be having with this might be that when you are using the elimination method, you are left with no variables.
if you come across this problem, then there are two possible answers

0=6   (an untrue statement) would mean that they are parallel lines and therefore have no solutions

0=0   (a true statement) would mean that the two lines are completely the same, and there fore have an infinite number of solutions.