How to solve -6x + 3y = 18
Y=2x - 2
2 answers:
Let's solve this by substitution. Note that y is defined: y = 2x - 2. Subst. 2x - 2 for y in the other equation: -6x + 3(2x - 2) = 18.
Then -6x + 6x - 6 = 18. Unfortunately, -6 does not equal 18, so there is no solution. The graphs of these two lines are parallel.
-6x + 3(2x-2)= 18
-6x + 6x - 6 = 18
-6 ¥ 18
no solution
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