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surryyy

  • one year ago

Analyze the following graph and select the best match for the slope of the graph. 1/3 3 -1/3 -3 https://static.k12.com/eli/bb/1211/4_68960/2_33573_3_68963/bca78d55b205e10e6421f29b50ced960efb88a1b/media/d7d262058af97602d9effa86fbae1a6e32f4b842/mediaasset_1025083_1.gif

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  1. Nnesha
    • one year ago
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    line is increasing or decreasing ?

  2. Nnesha
    • one year ago
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    |dw:1440945121141:dw| if line start from 3rd quadrant to 1st quadrant then line would be increasing

  3. surryyy
    • one year ago
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    oh ok

  4. Nnesha
    • one year ago
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    |dw:1440945214788:dw| if line start from 2nd quadrant to 4th quadrant then decreasing

  5. Nnesha
    • one year ago
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    so now look at the graph tell is it increasing or decreasing ?

  6. surryyy
    • one year ago
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    decreasing

  7. Nnesha
    • one year ago
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    yes right if line is decreasing then slope would be negative if line is increasing then slope would be positive

  8. Nnesha
    • one year ago
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    slope = rise /run |dw:1440945466511:dw| or you can pick two points to find slope

  9. Nnesha
    • one year ago
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    pick two points !

  10. Nnesha
    • one year ago
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    two points means (x,y)(x,y) two order pair

  11. Nnesha
    • one year ago
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    or you can use the formula `slope=rise/run` to find slope how many units it's going down from the y-intercept and then left ? |dw:1440945748106:dw|

  12. Nnesha
    • one year ago
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    |dw:1440945823245:dw| y-intercept is point where line cross y-axis

  13. surryyy
    • one year ago
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    2?

  14. Nnesha
    • one year ago
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    hmm no try again |dw:1440945961436:dw|

  15. surryyy
    • one year ago
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    3

  16. Nnesha
    • one year ago
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    hmm no well let's pick two points |dw:1440946053472:dw| i put 2 red dots what are the x's and y''s values there ?

  17. Nnesha
    • one year ago
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    x comes first and then y (x,y)

  18. surryyy
    • one year ago
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    (1,2)?

  19. Nnesha
    • one year ago
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    |dw:1440946397796:dw| it should be (1,-1) remember y values are negative in 4th quadrant

  20. Nnesha
    • one year ago
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    what bout the 2nd dot ?

  21. Nnesha
    • one year ago
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    dot is on the y-axis thats mean x values would be 0 (0,?) y = ?

  22. surryyy
    • one year ago
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    (0,2)?

  23. Nnesha
    • one year ago
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    yes looks good now use the slope formula to find slope (0,2)(1,-1) \[\huge\rm \frac{ y_2 -y_1 }{ x_2 -x_1 }\]

  24. surryyy
    • one year ago
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    it would be -3?

  25. Nnesha
    • one year ago
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    yes right!

  26. surryyy
    • one year ago
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    thnx

  27. Nnesha
    • one year ago
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    np

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