What is the solution to this system of linear equations? y - 4x=7 2y + 4x = 2 (3,1) (1,3) 3.-1) (-1,3)

asked Sep 14, 2022 73.3k views

19 votes

What is the solution to this system of linear equations?

y - 4x=7
2y + 4x = 2
(3,1)
(1,3)
3.-1)
(-1,3)

by Andel

2.8k points

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13 votes

$y=7+4x\\2(7+4x) +4x=2\\14+8x+4x=2\\14+12x=2\\12x=-12\\x=-1\\\\y-4(-1)=7\\y+4=7\\y=3$

(-1,3)

Benamir answered Sep 19, 2022

3.1k points

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