Find values of x and y for which ABCD must be a parallelogram. The diagram is not to scale.

Question

2x-2
y+24
5y-8
x+2 What are the values of x and y

Answer 1

To determine the values of x and y for which ABCD must be a parallelogram, we need to analyze the opposite sides of the quadrilateral and set them equal to each other.

Opposite sides of a parallelogram are equal in length.

Given points A, B, C, and D, and their respective coordinates:

A = (2x - 2, y + 24)
B = (5y - 8, x + 2)
C = (2x - 2, y + 24)
D = (5y - 8, x + 2)

We can set the x-coordinates of points A and B equal to each other:

2x - 2 = 5y - 8
2x = 5y - 6
x = (5y - 6)/2

Next, we set the y-coordinates of points A and B equal to each other:

y + 24 = x + 2
y = x + 2 - 24
y = x - 22

Now, we can substitute the expression for y in terms of x:

x = (5(x - 22) - 6)/2
x = (5x - 110 - 6)/2
x = (5x - 116)/2
2x = 5x - 116
3x = 116
x = 116/3
x = 38.67 (approximately)

Substituting this value of x back into the expression for y:

y = x - 22
y = 38.67 - 22
y = 16.67 (approximately)

So, the values of x and y for which ABCD must be a parallelogram are approximately x = 38.67 and y = 16.67.