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ineedyouubiebs Group Title

Write an equation for a line parallel to x+15=-5y passing through (0,4)

  • one year ago
  • one year ago

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  1. twinkieexpress Group Title
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    first put equation into y=mx+b then use point slope form y-y1=m(x-x1) m=slope

    • one year ago
  2. twinkieexpress Group Title
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    0=x1 4=y1

    • one year ago
  3. ineedyouubiebs Group Title
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    then the expression will look like y-4+m(x-0)

    • one year ago
  4. ineedyouubiebs Group Title
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    @twinkieexpress ?

    • one year ago
  5. madrockz Group Title
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    slope will be -1/5 as it is parallel to the rrquired eqn.so slopes of oth equations wll be same.

    • one year ago
  6. madrockz Group Title
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    u r given a point (0,4) this will be x1 and y1 in the eqn, (y-y1)=slope(x-x1) put the values and try it

    • one year ago
  7. ineedyouubiebs Group Title
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    How did you figured out the slope was -1/5?

    • one year ago
  8. eddy1120 Group Title
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    First substitute the value to make y positive: y=-0.2x-3 then use the gradient equation: (y-y1)=m(x-x1) where m is the slope and the point is (x1,y1) and you will get this: y-4=-0.2(x-0) and after simplifying you get: y=-0.2x+4

    • one year ago
  9. eddy1120 Group Title
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    because the slope on the x value is -1/5 when the coefficient of y is 1

    • one year ago
  10. ineedyouubiebs Group Title
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    @jim_thompson5910 ?

    • one year ago
  11. jim_thompson5910 Group Title
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    what's the slope of x+15=-5y

    • one year ago
  12. ineedyouubiebs Group Title
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    1

    • one year ago
  13. jim_thompson5910 Group Title
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    you need to get the equation into y = mx+b form first

    • one year ago
  14. ineedyouubiebs Group Title
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    is it y=1/5x+15

    • one year ago
  15. jim_thompson5910 Group Title
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    close, but no

    • one year ago
  16. ineedyouubiebs Group Title
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    umm can you help me with it, y intercept form was a sucky thing for me

    • one year ago
  17. jim_thompson5910 Group Title
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    start with x+15=-5y and divide both sides by -5 to isolate y

    • one year ago
  18. jim_thompson5910 Group Title
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    what you have is close, but it's a bit off

    • one year ago
  19. ineedyouubiebs Group Title
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    umm 7=x-3

    • one year ago
  20. jim_thompson5910 Group Title
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    hmm how are you getting that?

    • one year ago
  21. ineedyouubiebs Group Title
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    umm im trying to divide andthen divide both sides by -5

    • one year ago
  22. jim_thompson5910 Group Title
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    another way to think about it: divide every term by -5 to isolate y

    • one year ago
  23. ineedyouubiebs Group Title
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    -1/5-3=y

    • one year ago
  24. jim_thompson5910 Group Title
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    getting closer

    • one year ago
  25. ineedyouubiebs Group Title
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    ugh

    • one year ago
  26. jim_thompson5910 Group Title
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    you lost x

    • one year ago
  27. ineedyouubiebs Group Title
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    y=1/5x-3

    • one year ago
  28. jim_thompson5910 Group Title
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    it should be -1/5x - 3 = y

    • one year ago
  29. jim_thompson5910 Group Title
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    much better

    • one year ago
  30. jim_thompson5910 Group Title
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    oh sry

    • one year ago
  31. jim_thompson5910 Group Title
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    it should be y = -1/5x - 3 but you pretty much have it (ignoring the typo)

    • one year ago
  32. ineedyouubiebs Group Title
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    and whats my next step?

    • one year ago
  33. jim_thompson5910 Group Title
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    so what is the slope of y = -1/5x - 3

    • one year ago
  34. ineedyouubiebs Group Title
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    -1/5

    • one year ago
  35. jim_thompson5910 Group Title
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    so the slope of any parallel line to this one is also -1/5

    • one year ago
  36. jim_thompson5910 Group Title
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    since parallel lines have equal slopes

    • one year ago
  37. jim_thompson5910 Group Title
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    the given point is (0,4) so x = 0 and y = 4 -------------------- we know that m = -1/5, x = 0, y = 4 plug these 3 pieces of info into y = mx + b and solve for b

    • one year ago
  38. ineedyouubiebs Group Title
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    y=1/5x+4

    • one year ago
  39. jim_thompson5910 Group Title
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    the slope is negative, so it should be y = -1/5x + 4

    • one year ago
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