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photoshot17

  • 4 years ago

Solve this system of equations using substitution. Put your answer in ordered pair form, (x, y). x - 2y = -1 2x - y = 4

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  1. photoshot17
    • 4 years ago
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    x - 2y = -1 2x - y = 4

  2. SuperHooper
    • 4 years ago
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    Plug in a made up value for one of the variables to figure out what the other would be to make the equation valid. For example, if you set y to equal 1, then x has to equal 1, because 1 minus 2 equals -1.

  3. photoshot17
    • 4 years ago
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    need help fast

  4. SuperHooper
    • 4 years ago
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    if y equaled 2, x would have to equal 5 to satisfy the equations parameters, and those x and y values you achieve are your coordinates.

  5. Alexis1994_13
    • 4 years ago
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    x=11 , y=6.

  6. photoshot17
    • 4 years ago
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    11,6 is not the answer

  7. th88hansen
    • 4 years ago
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    rewrite the first to x = -1+2y and inset in the second 2(-1+2y)-y=4 and solve -2+4y-y = 4 -2+3y=4 3y = 4+2 y = 6/2 y=3 x = -1+2y x=-1+2*3 x = 5

  8. photoshot17
    • 4 years ago
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    what is the answer?

  9. th88hansen
    • 4 years ago
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    x = 5, y = 3

  10. photoshot17
    • 4 years ago
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    5,3 is not the answer

  11. th88hansen
    • 4 years ago
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    sry 6/3 y = 2 x = 3

  12. th88hansen
    • 4 years ago
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    rewrite the first to x = -1+2y and inset in the second 2(-1+2y)-y=4 and solve -2+4y-y = 4 -2+3y=4 3y = 4+2 y = 6/3 y=2 x = -1+2y x=-1+2*2 x = 3

  13. jhonyy9
    • 4 years ago
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    x-2y=-1 /2 2x-y=4 2x-4y=-2 2x-y=4 ---------- -- -3y=-6 y=-6/-3= 2 than y=2 --- 2x-2=4 --- 2x=6 --- x=6/2 =3 x=3 y=2

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