P is the point (ap^2 , 2ap) and Q the point (aq^2 , 2aq) on the parabola . The cord PQ passes through the point (a,0) a) Prove that pq = -1 I have no idea how to get started . Thanks in advance
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Originally Posted by womatama P is the point (ap^2 , 2ap) and Q the point (aq^2 , 2aq) on the parabola . The cord PQ passes through the point (a,0) a) Prove that pq = -1 I have no idea how to get started . Thanks in advance Start by drawing a diagram. Have you done that?
Originally Posted by womatama P is the point (ap^2 , 2ap) and Q the point (aq^2 , 2aq) on the parabola . The cord PQ passes through the point (a,0) a) Prove that pq = -1 I have no idea how to get started . Thanks in advance You have 2 points. Determine the equation of the line which passes through these points: If you know and then the equation of the line is: Since this line has to pass through (a, 0) you only have to replace x by a and y by 0. Simplify!
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