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OpenStudy (anonymous):
Find the solution of y = –4x + 9 for x = 5.
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OpenStudy (anonymous):
Plug x=5 into the eqn
OpenStudy (anonymous):
hang on
OpenStudy (anonymous):
so, -4(5) equals -20, and add 9. The end result is -11. add the y= back into it, making it y=-11
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