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ValentinaT

  • 2 years ago

Rate of change help?

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  1. ValentinaT
    • 2 years ago
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    I need help with part c.

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  2. BluFoot
    • 2 years ago
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    \[\frac{ Y2-Y1 }{ X2-X1}\] Can you find two coordinates on the line? (x1,y1) and (x2,y2)

  3. ValentinaT
    • 2 years ago
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    So, 25 would be Y, and 3 would be x?

  4. BluFoot
    • 2 years ago
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    Yeah that's one point! Another point is (0,0) right?

  5. BluFoot
    • 2 years ago
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    Now use those two coordinates to find the rate of change using the formula above.

  6. ValentinaT
    • 2 years ago
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    Yeah, so \[\frac{ 25 - 0}{ 3 - 0 } = \frac{ 25 }{ 3}\]

  7. BluFoot
    • 2 years ago
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    Perfect, good job :)

  8. ValentinaT
    • 2 years ago
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    Thanks, so is that the answer or is it 8.333...?

  9. BluFoot
    • 2 years ago
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    Fractions are generally more accurate than decimals, but it depends what your teacher is asking for. If in doubt, keep it as a fraction!

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