Mathematics

Question

M(4, 2) is the midpoint of . The coordinates of S are (6, 1). What are the coordinates of R? (8, 0) (2, 3) (1.5, 3) (5, 1.5)

1 Answer

  • assuming M is midpoint of RS

    the midpoint formula is

    x term of the midpoint is average of the x value of the 2 points
    y term of the midpoint is average of the y value of the 2 points


    if R is (x,y)

    S is (6,1)

    x value of midpoint is 4
    x value of S is 6
    x value os R is x

    so
    average of x and 6  is 4,
    (x+6)/2=4,
    x+6=8,
    x=2


    y value of midoint is 2
    y value of S is 1
    y value of R is y

    average of 1 and y is 2
    (y+1)/2=2
    y+1=4
    y=3



    the midpoint is (2,3)
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