The midpoint of a point A(5,x) and B(y,2)is(2,2)find the value of x and y

Mathematics

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Answer

x=2,y=−1x=2, y=-1

Step-by-step solution

4 steps

To find the values of xx and yy, we use the midpoint formula. If the midpoint of two points (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) is (Xm,Ym)(X_m, Y_m), then:

Xm=x1+x22X_m = \frac{x_1 + x_2}{2} Ym=y1+y22Y_m = \frac{y_1 + y_2}{2}

Given:
Point A = (5,x)(5, x)
Point B = (y,2)(y, 2)
Midpoint = (2,2)(2, 2)

  1. Set up the equation for the x-coordinate.

    Using the x-coordinates of A, B, and the midpoint:

    5+y2=2\frac{5 + y}{2} = 2
  2. Solve for yy.

    Multiply both sides by 2:

    5+y=2×25 + y = 2 \times 2 5+y=45 + y = 4

    Subtract 5 from both sides:

    y=4−5y = 4 - 5 y=−1y = -1
  3. Set up the equation for the y-coordinate.

    Using the y-coordinates of A, B, and the midpoint:

    x+22=2\frac{x + 2}{2} = 2
  4. Solve for xx.

    Multiply both sides by 2:

    x+2=2×2x + 2 = 2 \times 2 x+2=4x + 2 = 4

    Subtract 2 from both sides:

    x=4−2x = 4 - 2 x=2x = 2

    The values are x=2x = 2 and y=−1y = -1.

    x=2,y=−1\boxed{x=2, y=-1}

    Dernière correction gratuite aujourd'hui — reviens demain, ou tape /upgrade pour l'illimité.

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