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OpenStudy (anonymous):
determine whether (-4,8) is a solution to 7x-3y=9
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OpenStudy (anonymous):
use the point in the equation. 7(-4)-3(8) = 9 Does it equal 9?
OpenStudy (anonymous):
no
OpenStudy (anonymous):
Then you have your answer
OpenStudy (mathmale):
You could conclude, in words, that (-4,8) is not a solution of 7x-3y=9 because the equation is untrue when -4 is substituted for x and 8 for y.
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