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March 29, 2017

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A student used points (150,80) and (50,30) but wrote the equation y=5x + 0.5. What mistake did the student make?

  • Math - ,

    (150,80), (50,30).

    m =(30-80)/(50-150) = -50/-100 = 0.5

    Y = mx + b
    Y = 0.5*150 + b = 80
    b = 80-75 = 5

    Eq: Y = 0.5x + 5

    Error: The student interchanged the slope and Y-intercept.

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