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15 March, 00:47

Solve the system using substitution.

y=4x-8y=2x+10

A.

(1, - 4)

B.

(3, 4)

C.

(9, 28)

+2
Answers (1)
  1. 15 March, 00:52
    0
    Step-by-step explanation:

    y=4x-8 ... (1)

    y=2x+10 ... (2)

    Substituting y in (1) in (2)

    4x - 8 = 2x + 10

    4x - 2x = 10 + 8

    2x = 18

    x = 18/2

    x = 9

    Putting x in (2)

    y = 2 (9) + 10

    y = 18 + 10

    y = 28
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