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26 January, 00:56

How many solutions does this system have?

X-y=-4

3x+y=8

O one

O two

O an infinite number

O no solution

+3
Answers (2)
  1. 26 January, 01:11
    0
    Infinite Number
  2. 26 January, 01:13
    0
    There's only 1 answer. (1, 3.2)

    Step-by-step explanation:

    X-y=-4

    3X+y=8

    Y's cancel

    4x=4

    X=1

    Substitute the 1 for X and solve

    -4 (1-y=-4)

    3 (1) + y=8

    -4+4y=16

    4+y=8

    X's cancel

    5y=16

    Y=3.2
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