Anonymous
Anonymous asked in Science & MathematicsMathematics · 1 decade ago

Solve the system of linear equations below.?

y = -2x + 19

y = x + 7

A. x = 4, y = 11

B. x = -12, y = -5

C. x = -4, y = 3

D. x = 8, y = 3

2 Answers

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  • dask
    Lv 4
    1 decade ago
    Favorite Answer

    Answer is A.

    Subtract:(y=-2x + 19) - (y =x + 7)

    Answer is 0=-3x +12

    -12 = -3x

    x=4

    Sub. X=4 into y= x+7

    y= 4 + 7

    y=11

    X=4 and y=11

  • 1 decade ago

    The answer's A

    Use substitution to put x + 7 = - 2x + 19 because both equations = y

    Then solve for x so 3x = 12

    Divide 3 on each side so x = 4.

    Source(s): Experience
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