Which ordered pair is the solution to the system of equations? -3x+4y=-20 x+4y=-4 A. (8, 1) B. (−12, 2) C. (−4, −8) D. (4, −2)

asked May 25, 2016 220k views

3 votes

Which ordered pair is the solution to the system of equations?

-3x+4y=-20
x+4y=-4
A.
(8, 1)

B.
(−12, 2)

C.
(−4, −8)

D.
(4, −2)

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2 votes

x+4y=-4
x=-4-4y

-3(-4-4y)+4y=-20
12+12y+4y=-20
16y=-20-12
y=-32/16
y=-2

x=-4-4(-2)
x=-4+8
x=4

D.(4,2)

Amoy answered May 30, 2016

by Amoy

8.7k points

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