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saysay92
02.12.2021 •
Mathematics
Determine whether (3, 2) and (2, - 1) are solutions to the equation – 3x + y = - 7.
A: both (3,2) and (2,-1) are solutions
B:neither (3,2) nor (2,-1) is a solution
C:(2,-1) is a solution but (3,2) is not
D:(3,2) is a solution but (2,-1) is not
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Ответ:
D
Step-by-step explanation:
plug in (3,2) to see if it's a solution:
A) does -3(3) + 2 equal -7? yes
B) since 'A' is a solution then 'B' cannot be the answer
C) since (3,2) is a solution then 'C' cannot be the answer
plug in (2,-1) to see if it's a solution:
plug in (2,-1) to see if it's a solution:
-3(2) - (-1) equal -7? no, it equals -5
only (3,2) is a solution so the answer is D
Ответ:
I can try to help but I can't promise you.
have a great day.
Step-by-step explanation: