Ok, i was just on a site for tutoring but it isn't making much sense to me! What steps do i follow through when doing this? y=3x+7 y=x-9
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Originally Posted by topaz192 Ok, i was just on a site for tutoring but it isn't making much sense to me! What steps do i follow through when doing this? y=3x+7 y=x-9 There are several ways, the one I favor most is this: The two y values are equal, so let them be equal: . Now use x = -8 in either one of the original equations: So the solution is (x, y) = (-8, -17). -Dan
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