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MATH

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1.The point P divides the interval joining A(-1,-2) to B(9,3) internally in the ratio 4:1. Find the coordinates of P.

2. Solve.
4-x/x<1

My answer: x>2

  • MATH - ,

    P is 1/5 of the way from A to B.
    So, add 1/5 of the difference to to get

    P = (-1 + 1/5 (9+1) , -2 + 1/5 (3+2)) = (1,-1)

  • MATH - ,

    Or, if P is 4/5 of the way, P=(7,2)

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