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anonymous

  • one year ago

Which function has the greatest rate of change? A. 14x – 2y = 8 B. y = 6x – 5 C. x y −2 −7 −1 −2 0 3 D. A linear function that goes through point 1, 3 and point 0, negative 2

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  1. anonymous
    • one year ago
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    Please Help! ^.^

  2. butterflydreamer
    • one year ago
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    rate of change means slope :) So you want to find the slope for each of the functions.

  3. anonymous
    • one year ago
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    Okay! Thank You! ⌒‐⌒

  4. anonymous
    • one year ago
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    So what would the answer be?

  5. butterflydreamer
    • one year ago
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    you're welcome :) Well can you tell me what you got as the slope for each of the functions?

  6. welshfella
    • one year ago
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    rearrange the functions to the form y = mx + b m will be your slope

  7. welshfella
    • one year ago
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    B is in that form already y = 6x - 5 so its slope = 6

  8. anonymous
    • one year ago
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    okay

  9. anonymous
    • one year ago
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    how do we solve a,c and d?

  10. welshfella
    • one year ago
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    well rearrange A to y = mx + b form

  11. anonymous
    • one year ago
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    Slope = 7

  12. welshfella
    • one year ago
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    yes now for C you need to see how y increases with unit increase of x as x goes from -2 to -1 y does from -7 to -2 so thats a slope of ?

  13. butterflydreamer
    • one year ago
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    you might want to use the slope formula: m (slope) = rise/ run \[m = \frac{ y2 - y1 }{ x2 - x1 }\]

  14. welshfella
    • one year ago
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    yes that will give you the slope from the points on the graph

  15. welshfella
    • one year ago
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    you can use that for option D

  16. welshfella
    • one year ago
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    for option C the slope is -2-(-7) / -1-(-2)

  17. anonymous
    • one year ago
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    -7 for C?

  18. welshfella
    • one year ago
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    no

  19. welshfella
    • one year ago
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    how mant units is it from -7 up to -2 ?

  20. anonymous
    • one year ago
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    5

  21. welshfella
    • one year ago
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    right and -2 to -1 is one unit slope = 5/1

  22. welshfella
    • one year ago
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    now to find the slope for D plug in the points (1,3) and (0,-2) into (x2,y2) and (x1,y1) into the formula for m that butterfly dreamer posted

  23. anonymous
    • one year ago
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    Thank You! :)

  24. welshfella
    • one year ago
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    yw

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