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Discord Group Title

y - 2x = 10 y = 4x + 8 Solve by substitution.

  • one year ago
  • one year ago

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  1. AriPotta Group Title
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    well, you know that y = 4x + 8, so you just substitute that for y in the first equation

    • one year ago
  2. rainbow22 Group Title
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    y=2x+10 2x+10=4x+8 solve

    • one year ago
  3. rainbow22 Group Title
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    2x+2=4x 2x=2 x=1

    • one year ago
  4. AriPotta Group Title
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    do you know what to do now?

    • one year ago
  5. Discord Group Title
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    Actually can do do it again. I'm still lost.

    • one year ago
  6. rainbow22 Group Title
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    first you would find y in terms of x

    • one year ago
  7. AriPotta Group Title
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    it would be (4x + 8) - 2x = 10

    • one year ago
  8. AriPotta Group Title
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    so you combine like terms first

    • one year ago
  9. AriPotta Group Title
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    4x and -2x being like terms

    • one year ago
  10. Discord Group Title
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    How do you get -2x?

    • one year ago
  11. AriPotta Group Title
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    because in our equation, it says (4x + 8) - 2x = 10. minus 2x is the same as -2x

    • one year ago
  12. AriPotta Group Title
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    so to combine 4x and -2x, it would be 4x - 2x, which is...

    • one year ago
  13. Discord Group Title
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    Oh man. I wrote that backwards.

    • one year ago
  14. Discord Group Title
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    Its y = 2x - 10

    • one year ago
  15. AriPotta Group Title
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    what? can you write the whole question correct? :/

    • one year ago
  16. Discord Group Title
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    Its y = 2x - 10 y = -4x + 8

    • one year ago
  17. AriPotta Group Title
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    oh

    • one year ago
  18. AriPotta Group Title
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    ok, so it would be 2x - 10 = -4x + 8

    • one year ago
  19. AriPotta Group Title
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    now you have to add 4x to both sides

    • one year ago
  20. AriPotta Group Title
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    wait.

    • one year ago
  21. AriPotta Group Title
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    nvm, continue doing that

    • one year ago
  22. Discord Group Title
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    Alright thanks. I understand now.

    • one year ago
  23. AriPotta Group Title
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    oh ok.

    • one year ago
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