Which ordered pair is a solution to the system of linear equations -4x+y=8 and x-5y=17

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asked Dec 13, 2017 205k views

2 Answers

Ajwl · Answer 1 · 2017-12-14T13:33:06+0000

x-5y=17 then x = 5y + 17
replace x = 5y + 17 into -4x+y=8

-4(5y + 17) +y = 8
-20y - 68 + y = 8
-19y = 8 + 68
-19y = 76
y = 76/-19
y = -4

x = 5y + 17
x = 5(-4) + 17
x = -20 + 17
x = 3

Answer: the order pair (3, -4)

Which ordered pair is a solution to the system of linear equations -4x+y=8 and x-5y=17

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