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Math Help - Finding the Linear equation.

  1. #1
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    Finding the Linear equation.

    Hello guys, i hv doubt in this question:

    "1-Mark the point Q, such that the line through P (1, -2) and Q is perpendicular to the x axis (the horizontal axis) so that the point Q to point P is equidistant from the axis x. Find the equation of the line."


    If the line be perpendicular of the X axis, so will be parallel of the Y axis. A line parallel to the axis Y can be a function?
    OBS: Sorry about my bad technical English.
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  2. #2
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    Re: Finding the Linear equation.

    A line parallel to the axis Y can be a function?
    no, but vertical lines have an equation of the form x = k , where k is a constant
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  3. #3
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    Re: Finding the Linear equation.

    the graph would be some thing like this?
    Finding the Linear equation.-xt2jl.png
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  4. #4
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    Re: Finding the Linear equation.

    yes ... now what is the equation of the vertical line that passes thru points P and Q ?
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  5. #5
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    Re: Finding the Linear equation.

    x = 1 ??
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