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anonymous

  • one year ago

please help (4,-6); m= 3/5

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  1. amilapsn
    • one year ago
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    Do you want the equation of the straight line?

  2. anonymous
    • one year ago
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  3. anonymous
    • one year ago
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    thats the possable out comes.

  4. amilapsn
    • one year ago
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    \(m\) is the gradient of the line, right? How do you find the gradient of a straight line?

  5. anonymous
    • one year ago
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    idk

  6. triciaal
    • one year ago
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    use the same formula for the other question the gradient is the same as the slope

  7. anonymous
    • one year ago
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    its D?

  8. amilapsn
    • one year ago
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    \(\Huge m={\frac{\text{y difference}}{\text{x difference}}}\)

  9. anonymous
    • one year ago
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    ya

  10. amilapsn
    • one year ago
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    nope...

  11. amilapsn
    • one year ago
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    so, \(\Huge m=\frac{y-(-6)}{x-4}\) ok?

  12. anonymous
    • one year ago
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    ok

  13. amilapsn
    • one year ago
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    So what's the answer?

  14. anonymous
    • one year ago
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    -4?

  15. amilapsn
    • one year ago
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    I mean what's the option?

  16. anonymous
    • one year ago
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    Oh A

  17. amilapsn
    • one year ago
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    \[\Huge \cal Bingo!\]

  18. anonymous
    • one year ago
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    lol can you help on one more?

  19. amilapsn
    • one year ago
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    Yes sure.

  20. anonymous
    • one year ago
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  21. amilapsn
    • one year ago
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    What is the slope of the graph?

  22. anonymous
    • one year ago
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    how do i find that?

  23. amilapsn
    • one year ago
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    take two points of the graph and plugin the values to \[\Huge m={\frac{\text{y difference}}{\text{x difference}}}\]

  24. anonymous
    • one year ago
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    the 2 points are 10 and - 10 right??

  25. amilapsn
    • one year ago
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    Not quite. If you choose a point then that point has two coordinates: (x,y) right?

  26. anonymous
    • one year ago
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    ya

  27. amilapsn
    • one year ago
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    So?

  28. anonymous
    • one year ago
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    thats 10 and -10 thats the x,y

  29. anonymous
    • one year ago
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    10 and -2?

  30. amilapsn
    • one year ago
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    It's one point. To calculate slope you've to choose two points:|dw:1439913690096:dw| Let's take point A and B. Can you tell me what's the coordinates of point A?

  31. anonymous
    • one year ago
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    4,-8?

  32. amilapsn
    • one year ago
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    nope. The coordinates of point A is (-8,6).. make sure to use brackets when writing coordinates. :) Can you try the coordinates of point B?

  33. anonymous
    • one year ago
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    -6,4

  34. amilapsn
    • one year ago
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    when you telling coordinates first you have to tell x coordinate. then you've to tell y coordinates.

  35. anonymous
    • one year ago
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    so 4,-6?

  36. amilapsn
    • one year ago
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    you got that. So what would be the slope of the graph?

  37. anonymous
    • one year ago
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    i dont know

  38. anonymous
    • one year ago
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    i think i got it is it C?

  39. amilapsn
    • one year ago
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    Let's put the equation of the slope this way: \[\huge m=\frac {y_A-y_B}{x_A-x_B}\] Can you plugin the values?

  40. anonymous
    • one year ago
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    is it C?

  41. anonymous
    • one year ago
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    HELLO?!

  42. amilapsn
    • one year ago
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    yep.... Do you need more explanation?

  43. anonymous
    • one year ago
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    no

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