To find the intersection point of these two equations, we can first solve for y in the first equation:
y = -x + 6
Now substitute this into the second equation:
3x + 3(-x + 6) = 18
3x - 3x + 18 = 18
18 = 18
This equation is always true, which means that the two lines are actually the same line and intersect at all points along that line.
y=−x+6 and 3x+3y=18
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