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The goal is to get y alone.
1. 6x-9y=3 (divide by 3 to the whole equation)
2x-3y=1 (subtract 2x from both sides)
-3y=-2x+1 (divide by -3 to the whole equation)
Just use random x values, to find some y values
2. x+3y=0 (subtract x from both sides)
3y=-x (divide by three to both sides)
Note there are a ton more points, you just keep using different x values to find more points.
I realized I have been doing the wrong things for these problems. I will fix each of these (I forgot to read the title, and it clearly says use substitution method).
So for this problem, solve the second equation for x and substitute in what you find for x into the second equation.
-27y=3 (divide by negative 27 to both sides)
Substitute y=-1/9 into x=-3y to solve for x
Therefore the answer is x=1/3 and y=-1/9
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