Determine whether (-7, 2) is a solution to the system: 2x + 5y = −4 3x - y = 11

asked Dec 19, 2021 47.1k views

1 vote

Determine whether (-7, 2) is a solution to the system:
2x + 5y = −4
3x - y = 11

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3 votes

x = -7
y = 2

2 x (-7) + 5 x 2 = -4
3 x (-7) - 2 = 11

-14 + 10 = -4
-21 - 2 = 11

-4 = -4 (yes)
-23 = 11 (no)

Answer: (-7, 2) is not a solution

Imtiaz Sakib answered Dec 25, 2021

4.2k points

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