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Phebe

  • one year ago

****RATE OF CHANGE **** http://prntscr.com/7rnwmm

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  1. nincompoop
    • one year ago
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    so every time you see rate of change problem, you are looking for a slope-related solution. can you try to solve the problem now based on the hint I gave you?

  2. Phebe
    • one year ago
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    Well i was already given that hint. i suppsed to use mx+b right?

  3. nincompoop
    • one year ago
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    something like it, but you're missing a lot of other information

  4. Phebe
    • one year ago
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    please tell me what im missing. i really need to get this right

  5. nincompoop
    • one year ago
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    it has to be an equation

  6. Phebe
    • one year ago
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    yea it is 5x+3y=-2

  7. nincompoop
    • one year ago
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    so how will you convert that into slope-intercept form?

  8. Phebe
    • one year ago
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    i forgot

  9. nincompoop
    • one year ago
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    \(ax + by = c \) \(ax - ax + by = c - ax \) \(\large\frac{by}{b} = \frac{-ax}{b} + \frac{c}{b} \rightarrow y = \frac{-ax + c}{b} \)

  10. nincompoop
    • one year ago
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    it is just a matter of algebraic manipulation that requires you to solve for y

  11. nincompoop
    • one year ago
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    a and b are your coefficients for the x and y respectively and c is the constant

  12. Phebe
    • one year ago
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    so ummmm............. i get that but what do i put for the letters

  13. nincompoop
    • one year ago
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    do you know how to solve for y (isolate y) ?

  14. Phebe
    • one year ago
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    Yes i do

  15. nincompoop
    • one year ago
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    try

  16. Phebe
    • one year ago
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    okay i know i suppse to solve for y , All i need is the equation? How do i get the equation

  17. nincompoop
    • one year ago
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    uh when you solve for y, you have an equation in terms of y and that is what you need to be able to identify the "rate of change," which is the slope (coefficient) of x in the equation

  18. nincompoop
    • one year ago
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    SOLVE for y, right now

  19. nincompoop
    • one year ago
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    I do not need a "suppose," I just need you to show me that you can actually solve for y

  20. Phebe
    • one year ago
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    the equation is 5x+3y=-2 right?

  21. nincompoop
    • one year ago
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    why are you asking me, isn't that the problem you're given?

  22. Phebe
    • one year ago
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    yes

  23. nincompoop
    • one year ago
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    what makes an equation is the presence of the equal sign

  24. Phebe
    • one year ago
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    Oh wait i get how to do it! thanks for everything!!

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