3x - y = 4

xy = 5

3x - y = 4 first equation

-y = -3x + 4 subtracted 3x

y = 3x - 4 divided by -1

xy = 5 second equation

x(3x - 4) = 5 substituted 3x - 4 for y into second equation

3x² - 4x = 5 distributive property

3x² - 4x - 5 = 0 subtracted 5

Use

graphing calculator or quadratic formula.

x ≈ 2.12 or -0.786

y ≈ 2.359 or -6.359

*McGenius*

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