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Nobleufia
17.11.2019 •
Mathematics
Which ordered pair is a solution to the equation 4x + 7y = –5?
a. (–4, –3)
b. (–4, 3)
c. (4, –3)
d. (4, 3)
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Ответ:
7y=-4x-5
y=-4/7x-5/7
Since there are basically and infinite amount of solutions to this equation, I would plug in both a 4 and -4 for x in the equation and solve for y
y=(-4/7)(4)-5/7
y=-16/7-5/7
y=-21/7, or -3
So since (4,-3) is a choice, the answer is C
Hope this helps
Ответ: