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  1. #1

    straight line question

    A straight line (l) has equation , which of the following is the slope of a perpendicular line to line (l)?


    (A)

    (B)

    (C)

    (D)

    Thanks!

  2. #2
    In order to find the slope of a line we must rewrite the equation to slope-intercept form i.e. where is the slope.

    So, the equation can be written as

    Thus the slope of line (l) is .

    The slope of a perpendicular line to line (l) must be satisfy the following equation



    Therefore the correct answer is (C).

    Hope these help!!

  3. #3
    Thank you!!

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