D = 101/4
if you need it in decimal form it is 25.25
if you need it in mixed number form it is 25 1/4
-8 the point on the line with Y=4
The linear combination method is the same as the elimination method. Let's multiply the second equation by -2 so the x terms cancel each other out. When we do that we get a system of
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and
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. The x-terms cancel each other out giving us
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and y = -3. Now sub -3 into one of the equations to solve for x. x+2(-3)=-4, and x - 6 = -4. x = 2. So the solution for our system is (2, -3)