Mathematics
Grade9
Easy

Question

Find the midpoint of a line segment with endpoints at (1, 6) and (9, 9) ?

  1. (0, 0)    
  2. (5, 7.5)    
  3. (4.5, 4.5)    
  4. (5, 7)    

hintHint:

The midpoint of a line segment is halfway between the two x values and halfway between the two y values. Mathematically, that would be the average of each coordinate.

The correct answer is: (5, 7.5)


    The formula to find midpoint of line segment bounded by two points left parenthesis x subscript 1 comma y subscript 1 right parenthesis and left parenthesis x subscript 2 comma y subscript 2 right parenthesis is  open parentheses fraction numerator x subscript 1 end subscript plus x subscript 2 end subscript over denominator 2 end fraction comma fraction numerator y subscript 1 end subscript plus y subscript 2 end subscript over denominator 2 end fraction close parentheses
    Plug in the (x, y) values from the given points and solve.
    open parentheses fraction numerator 9 plus 1 over denominator 2 end fraction comma fraction numerator 9 plus 6 over denominator 2 end fraction close parentheses
    open parentheses fraction numerator 10 over denominator 2 end fraction comma fraction numerator 15 over denominator 2 end fraction close parentheses
    We can simplify the fraction to get the final answer.
    (5, 7.5)
    Therefore, the midpoint of a line segment with endpoints at (1, 6) and (9, 9) is (5, 7.5).

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