PPT Slide

x

y

example: 3x-2y = 2 and 2x - y = 2 intersect at (2,2)

(2,2)

3(2) - 2(2) = 6 - 4 = 2 and also

2(2) - 2 = 4 - 2 = 2

so (2,2) is a solution for both equations

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