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Mashutka [201]
3 years ago
12

Which ordered pair in the form (a, b) is a solution of this equation?

Mathematics
1 answer:
Evgen [1.6K]3 years ago
5 0

3a - 4b = 21


check (-2 , -3)


3(-2) -4(-3) =21


-6 +12  = 21


6 does not = 21  so NO


check (0 , 7)


3(0) -4(7) =21


0-28=21


-28 does not equal 21  so NO


check (-3 , -2)


3(-3) -4(-2) =21


-9 +8  = 21


1 does not = 21  so NO


check (7 , 0)


3(7) -4(0) =21


21  = 21

Choice D

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