Question

Solve the system using elimination.

system
(1 point)

(2, 1)
(0, –2)
(–2, 0)
(1, 2)

Answer 1

2x + 6y = -12 ---> (-5)2x + 6y = - 12
5x - 5y = 10 ----> (2)5x - 5y = 10
--------------------------------
-10x - 30y = 60 (result of multiplying by -5)
10x - 10y = 20 (result of multiplying by 2)
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-40y = 80
-40y/-40 = 80/-40(divide both sides by -40)
y = - 2

now sub - 2 in for y in either of the original equations...
5x - 5y = 10
5x -5(-2) = 10
5x + 10 = 10
5x = 10 - 10
5x = 0
5x/5 = 0/5
x = 0

check...
2x + 6y = -12
2(0) + 6(-2) = -12
0 - 12 = -12
-12 = -12 (correct)

answer : (0, -2)

Answer 2

THANK YOU

Answer 3

your quite welcome :)