aoutb9reStep aoutb9reStep
  • 13-11-2016
  • Mathematics
contestada

What is the solution to the system of equations?

y =1/3 x – 10

2x + y = 4

(–8, 6)
(–6, 16)
(6, –8)
(16, –6)

Respuesta :

texaschic101
texaschic101 texaschic101
  • 13-11-2016
y = 1/3x - 10
sub in 1/3x - 10 in for y in the other equation

2x + y = 4
2x + 1/3x - 10 = 4...multiply everything by 3 to get rid of factions
6x + x - 30 = 12
7x = 12 + 30
7x = 42
x = 42/7
x = 6

2x + y = 4
2(6) + y = 4
12 + y = 4
y = 4 - 12
y = - 8

solution is : (6,-8)
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jamierivera515
jamierivera515 jamierivera515
  • 28-09-2018

the answer C hope it helps

Answer Link

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