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ariesdragon20

Solve the following system. x - y = 10 x + y = 8 Answer (9, -1) (9, 1) (-1, 9) (-9, 1)

  • 2 years ago
  • 2 years ago

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  1. bahrom7893
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    Okay this is how u solve systems. First solve one equation for one variable.

    • 2 years ago
  2. bahrom7893
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    So solve the first equation for x, or y, doesn't matter. Let's solve for x: x-y=10 Add y to both sides. What do u get?

    • 2 years ago
  3. ariesdragon20
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    x = y + 10

    • 2 years ago
  4. bahrom7893
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    Correct. Now plug that into the second equation: x + y = 8, but now that u know x, plug that instead of x in here. What do u get?

    • 2 years ago
  5. ariesdragon20
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    2y+10=8

    • 2 years ago
  6. bahrom7893
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    correct. Subtract ten from both sides. What do u get?

    • 2 years ago
  7. ariesdragon20
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    y = -1

    • 2 years ago
  8. bahrom7893
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    awesome. Now plug that back into the equation you had before.

    • 2 years ago
  9. ariesdragon20
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    x + -1 = 8 x = 9 danks schun!

    • 2 years ago
  10. bahrom7893
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    Yup. Your points are given in the form (x; y). Find whichever's yours.

    • 2 years ago
  11. bahrom7893
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    good job lol.

    • 2 years ago
  12. aminah.love18
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    lol

    • 2 years ago
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