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14-02-2018
Mathematics

contestada

Using any method, solve y=3x-4 and
y=-1/2x+3

Answers:
(3,2)
(-2,3)
(0,2)
(2,2)

Respuesta :

14-02-2018

multiply the second equation by 6 and add to the first.
6(y = -1/2 x + 3)

y = 3x - 4
6y= -3x + 18
7y = 0 + 14
y = 2

plug this in to one of the equations

2 = 3x - 4
2+4 = 3x
6 = 3x
2 = x

(2,2)

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