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  • 3 years ago

Find x and y such that the points A(-1,3), B(x,9) and C(5,y) are collinear with point B lying midway between Points A and C.

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  1. ghazi
    • 3 years ago
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    use mid point formula that states that mid point is mean of two end points |dw:1356918181777:dw|\[\frac{ -1+5 }{ 2 }=x\] similarly for y

  2. ghazi
    • 3 years ago
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    \[\frac{ 3+y }{ 2 }=9\]

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