Question

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

Answer 1

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Answer:

  x = 2

  y = 9

Step-by-step 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