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

User Nerses
by
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2 Answers

3 votes
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)
User Ajwl
by
8.1k points
3 votes
The answer would be (3, -4).
User Wouter Van Vliet
by
7.4k points
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