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ariesdragon20

  • 4 years ago

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

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  1. bahrom7893
    • 4 years ago
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    Okay this is how u solve systems. First solve one equation for one variable.

  2. bahrom7893
    • 4 years ago
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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?

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

  4. bahrom7893
    • 4 years ago
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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?

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

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

  7. ariesdragon20
    • 4 years ago
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    y = -1

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

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

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

  11. bahrom7893
    • 4 years ago
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    good job lol.

  12. aminah.love18
    • 4 years ago
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    lol

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