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HorseObsessed
Lv 5
HorseObsessed asked in Science & MathematicsMathematics · 8 years ago

If the slope of the line joining the points (2,4) and (5,k) is 2, find the value of k.?

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5 Answers

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  • chump
    Lv 5
    8 years ago

    (4-k)/(2-5) = 2 ; 2(2-5) = 4-k; 4 - 10 = 4 - k; k = 4 + 6 = 10

  • D g
    Lv 7
    8 years ago

    slope = rise / run

    rise = change in y value

    run = change in x value

    rise = k - 4

    run = 5-2 = 3

    now solve the slope

    2 = (k-4)/3

    multiply both sides by 3

    6 = (k-4)

    solve for k

    k = 6 + 4 = 10

    so that is how its done..

  • Como
    Lv 7
    8 years ago

    (k - 4) / 3 = 2

    k - 4 = 8

    k = 12

  • Battleaxe
    Lv 7
    8 years ago

    m = (y2 - y1)/(x2 - x1)

    2 = (k - 4)/(5 - 2)

    2 = (k - 4)/3

    multiply both sides by 3:

    6 = k - 4

    add 4 to both sides:

    k = 10

    - .--

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  • Wile E.
    Lv 7
    8 years ago

    x1 = 2

    y1 = 4

    x2 = 5

    y2 = k

    m = 2

    (y2 - y1) / (x2 - x1) = m:

    (k - 4) / (5 - 2) = 2

    (k - 4) / 3 = 2

    k - 4 = 3(2)

    k - 4 = 6

    k = 6 + 4

    k = 10

    ¯¯¯¯¯¯

     

    Source(s): 6/3/13
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