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ihavemathquestions

  • 3 years ago

Solve the system by graphing.

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  1. ihavemathquestions
    • 3 years ago
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  2. ihavemathquestions
    • 3 years ago
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    @Compassionate

  3. uzumakhi
    • 3 years ago
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    in second equation take y to right side then multiple second equation with 2

  4. ihavemathquestions
    • 3 years ago
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    I think the answer is either (-1, 3) or (3, -1) or (-3, -1) or (-1, - 3)

  5. Compassionate
    • 3 years ago
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    Put each equation in Y intercept form. Plug in a few numbers and graph.

  6. uzumakhi
    • 3 years ago
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    @Compassionate it can be done simply by eliminating Y

  7. Compassionate
    • 3 years ago
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    y = x + 2 y = 2x + 5 Plug in valies 1-2 for x.

  8. UnkleRhaukus
    • 3 years ago
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    \[-2x=2y-4\quad \implies\quad -2x+4=2y\quad\implies\quad y=-x+4\] \[2x-y=-5\quad\implies\quad2x+5=y\quad\implies\quad y=2x+5\]

  9. UnkleRhaukus
    • 3 years ago
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    |dw:1351501508249:dw|

  10. UnkleRhaukus
    • 3 years ago
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    |dw:1351501718547:dw|

  11. UnkleRhaukus
    • 3 years ago
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    |dw:1351501915975:dw|

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