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horsegirl27

  • one year ago

Please help! So, I know how to find the slope when given 2 sets of points. I can also figure out the slope when looking at a graph. But for problems such as 16x+8y=192, how do I find the slope??

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  1. anonymous
    • one year ago
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    solve for y. Once you have it in y=mx+b form the slope is m

  2. horsegirl27
    • one year ago
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    Okay, thanks. So I'm trying to solve for y and put it in the other form?

  3. anonymous
    • one year ago
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    yes

  4. UsukiDoll
    • one year ago
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    rearrange the equation so it looks like y=mx+b ... you may need to do some division because we need y by itself.

  5. horsegirl27
    • one year ago
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    What should I get when I do that? (this isn't a homework problem, I'm just finding practice problems to get more practice) I think if I see all the steps I may understand.

  6. UsukiDoll
    • one year ago
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    given: 16x+8y=192, we know that y = mx+b is the slope-intercept form so we need to rearrange 16x+8y=192 to make it look like y =mx+b so since the y portion needs to stay on the left what do we need to do to 16x?

  7. horsegirl27
    • one year ago
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    Divide, right?

  8. UsukiDoll
    • one year ago
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    that's later on.

  9. UsukiDoll
    • one year ago
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    16x+8y=192 but we need it in the form of y=mx+b . The 8y stays on the left.. so what do we need to do 16x... we need to _______ 16x to both sides

  10. anonymous
    • one year ago
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    |dw:1436186621877:dw|

  11. UsukiDoll
    • one year ago
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    I am so sorry ... my typing went to the dogs tonight

  12. horsegirl27
    • one year ago
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    Ohhhh that makes more sense! Oki, let me try it with this problem.

  13. horsegirl27
    • one year ago
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    y=2x+24, correct?

  14. UsukiDoll
    • one year ago
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    ok we now have our equation in y =mx+b form... 8y = -16x+192 so we divide the entire equation by 8. only the y portion of your answer is correct for the x portion, you forgot a negative sign the b value is wrong.

  15. horsegirl27
    • one year ago
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    Oops, lost track of that negative!

  16. UsukiDoll
    • one year ago
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    wait nevermind the b is right

  17. UsukiDoll
    • one year ago
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    :P told ya I got sticky fingers my typing is off and I feel another migraine coming.. but yes everything was right except for the negative sign being dropped.

  18. UsukiDoll
    • one year ago
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    y=-2x+24

  19. horsegirl27
    • one year ago
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    Ok. I'll have to watch out for that on my test, it's usually the little things that get me.

  20. horsegirl27
    • one year ago
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    Thanks for the help guys!

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