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OpenStudy (anonymous):
Help!! Medal!! Determine which ordered pair in the form (x, y) is a solution to 3x – 4y = 21. a. (-2, -3) b. (0, 7) c. (7, 0) d. (-3, 2)
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OpenStudy (anonymous):
All you have to do is Plug in the numbers. 3(-2) - 4(-3) does that equal 21?
OpenStudy (anonymous):
@pigglet
OpenStudy (anonymous):
no? i got distracted, sorry
OpenStudy (anonymous):
It's okay. So, you know the first one isn't right. Now do the second one.
OpenStudy (anonymous):
3*0-4*7?
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OpenStudy (anonymous):
That is the correct step up now what is the answer to answer choice B?
OpenStudy (anonymous):
-28?
OpenStudy (anonymous):
@pigglet
OpenStudy (anonymous):
is it c?
OpenStudy (anonymous):
3(0) - 4(7) 3 * 0 = 0 4 * 7 = 28 28 + 0 = 28 and C is correct
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