Question

For what values of x and y must each figure be a parallelogram?

Need help please, and explanation.

Answer 1

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Answer:

x = 2

y = 9

Explanation:

Opposite sides of a parallelogram are the same length. This relation is used to make equations with the given side lengths.

Top and Bottom

4x +20 = x +26

3x = 6 . . . . . . . . . . . subtract x+20 from both sides

x = 2 . . . . . . . . . divide by 3

Left and Right

7y = 6y + 9

y = 9 . . . . . . . . . subtract 6y from both sides