Question 72644
Find values for m and b in the following system so that the solution to the sytsem is (-3,4).

5x+7y=b
mx+y=22
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If y=4 when x=-3 you get:

5(-3)+7(4) = b
m(-3)+4 =22

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Then:
b=-15+28 = 13
and
-3m =18
m=-6
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Solution: b=13 and m=-6
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Cheers,
Stan H.