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anonymous

  • 5 years ago

Find the slope and y intercept 7-1/2y=2x

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  1. shadowfiend
    • 5 years ago
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    Do you know of a form of equations where you can easily get the slope?

  2. anonymous
    • 5 years ago
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    do you mean y=mx+b

  3. shadowfiend
    • 5 years ago
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    RIght.

  4. shadowfiend
    • 5 years ago
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    So if we can solve the above equation for y, then we might be closer to getting the slope and y-intercept, right? Can you solve the equation for y?

  5. anonymous
    • 5 years ago
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    Well I do know that you take 7 and subtract that from both sides geting -1/2y=2x-7 right?

  6. shadowfiend
    • 5 years ago
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    Exactly, that's the first step.

  7. anonymous
    • 5 years ago
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    okay then after that im confused

  8. anonymous
    • 5 years ago
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    well 2 would be the slope right?

  9. shadowfiend
    • 5 years ago
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    So then you need to get the y alone. That means you have to get rid of the -1/2 that's next to it.

  10. anonymous
    • 5 years ago
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    okay so 1/2+ -7 = 3.5

  11. shadowfiend
    • 5 years ago
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    Close. Because y is multiplied by the -1/2, we have to divide both sides by -1/2.

  12. shadowfiend
    • 5 years ago
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    Dividing by -1/2 is the same as multiplying by -2.

  13. anonymous
    • 5 years ago
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    oh thats where i always mess up

  14. shadowfiend
    • 5 years ago
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    So we would have: -2(-1/2y) = -2(2x - 7)

  15. anonymous
    • 5 years ago
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    -4x+14

  16. shadowfiend
    • 5 years ago
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    Exactly :)

  17. shadowfiend
    • 5 years ago
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    So now what's the slope?

  18. anonymous
    • 5 years ago
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    YAY haha the slope would be -4

  19. shadowfiend
    • 5 years ago
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    Right! And the y-intercept?

  20. anonymous
    • 5 years ago
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    14

  21. shadowfiend
    • 5 years ago
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    Rock it :)

  22. shadowfiend
    • 5 years ago
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    Ok, so now let's look at your other question and see if we can apply the same idea.

  23. anonymous
    • 5 years ago
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    okay sounds good

  24. anonymous
    • 5 years ago
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    (-2,8); 7x=5y+6

  25. shadowfiend
    • 5 years ago
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    Well, hehe, I was going to actually go to that problem, so we keep things organized :)

  26. anonymous
    • 5 years ago
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    o okay ill head over to it sorry

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