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P is a point on the graph of y= 5x+3. The coordinates of a point Q are (3,-2). If M is the mid point of PQ, then M must like on the line represented by
let coordinates of P be (a, 5a+3).let coordinates of M be (h, k).now, by mid point rule, we have2h=a+3 and 2k=5a+3 – 2eliminating a from these equations we get5h=k+7changing h and k into x and y respectively, we get5x=y+7
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