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vera_ewing

  • one year ago

math question

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  1. vera_ewing
    • one year ago
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  2. unimatix
    • one year ago
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    I can help with this.

  3. unimatix
    • one year ago
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    Okay so do you know what the x and y intercepts are? Can you find the x and y values you are looking for?

  4. vera_ewing
    • one year ago
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    2 and 5?

  5. carolinar7
    • one year ago
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    So what is the slope between those lines

  6. unimatix
    • one year ago
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    So it line would include (2, 0) and (0, 5) . Does that make sense?

  7. vera_ewing
    • one year ago
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    Yes, ok. Now what?

  8. unimatix
    • one year ago
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    Do you know how to find the slope?

  9. carolinar7
    • one year ago
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    Find the slope

  10. vera_ewing
    • one year ago
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    -5/2

  11. carolinar7
    • one year ago
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    \[\frac{ y2-y1 }{ x2-x1 }\]

  12. vera_ewing
    • one year ago
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    So what would the equation be in standard form?

  13. carolinar7
    • one year ago
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    y=ax+b I believe

  14. anonymous
    • one year ago
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    x-intecept of 2 (i.e. the point (2,0)) and a y-intercept of 3 (i.e. the point (0,3)) lie on the line... so repeat the procedure from the previous problem and your golden :D

  15. anonymous
    • one year ago
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    No standard from is ax+by=c

  16. carolinar7
    • one year ago
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    ok

  17. carolinar7
    • one year ago
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    True I forgot

  18. anonymous
    • one year ago
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    y=mx+b is slope intercept and point slope is the y2-y1=m(x2-x1)

  19. anonymous
    • one year ago
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    No probs :D

  20. carolinar7
    • one year ago
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    Remember that A has to be a positive and a whole number

  21. vera_ewing
    • one year ago
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    Wait so what is the equation in standard form?

  22. unimatix
    • one year ago
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    I've always thought point slope form looked so ugly.

  23. anonymous
    • one year ago
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    Yea honestly its only a cheat formula to remember the slope formula

  24. unimatix
    • one year ago
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    get your x value and y value on the same side and you've got standard form.

  25. vera_ewing
    • one year ago
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    So what would it look like? Can you show me?

  26. unimatix
    • one year ago
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    an example (but not your answer): 5x+29y = 39

  27. unimatix
    • one year ago
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    See the x and y are on the same side, constant is on the other.

  28. vera_ewing
    • one year ago
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    So it would be 2x+5y=-5/2 ?

  29. unimatix
    • one year ago
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    Nope. Your math is off.

  30. unimatix
    • one year ago
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    So how I'd solve it is: y = mx + b M = slope. Then plug in your x and y

  31. unimatix
    • one year ago
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    What did you get for you slope?

  32. vera_ewing
    • one year ago
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    y = -5x/2 + 5 is slope-intercept form right?

  33. unimatix
    • one year ago
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    Yep!

  34. vera_ewing
    • one year ago
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    So what would it be in standard form?

  35. unimatix
    • one year ago
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    So try adding the 5x/2 to each side from slope int.

  36. vera_ewing
    • one year ago
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    5x+2y=10?

  37. unimatix
    • one year ago
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    Ah yes. That looks right!

  38. vera_ewing
    • one year ago
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    Thanks

  39. unimatix
    • one year ago
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    You're welcome. Oh and if you ever want to check you can always plug in your values!

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