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    Can I ask you a quick question?

    A)Find the the equation of the line through the point A(2,6) which is perpendicular to the line PQ whose equation is 2y - x = 5.

    B)Find the length of the perpendicular from A to PQ

    okay so I got A) to be y=-2x + 10

    but for B) I cannot think of what to do

    I know we need another set of coordinates but how do we get them? thanks
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    What're coordinates of the intersection between the line perpendicular from A to PQ and the line PQ?
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    (Original post by aznkid66)
    What're coordinates of the intersection between the line perpendicular from A to PQ and the line PQ?
    (2,6)

    these are the only coordinates we have been given
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    That's the coordinates of A. You're supposed to interpret my questions as hints.

    You can draw a line segment from A perpendicular to PQ. This line segment can be extended into a line. What is the equation of this line?

    What is the equation of the line PQ?

    Hence, how do you find the intersection of these two lines, knowing their equations?
 
 
 
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