Dilation Rules

Quadrilateral WXYZ was dilated with the origin as the center to create quadrilateral W’X’Y’Z’. Which rule best represents the dilation that was applied to quadrilateral WXYZ to create quadrilateral W’X’Y’Z’?

• (x, y) --> (0.4x, 0.4y)

• (x, y) --> (x + 3, y + 2)

• (x, y) --> (2.5x, 2.5y)

• (x, y) --> (x - 3, y - 2)

Trapezoid A’B’C’D’ is the dilation of trapezoid ABCD. Which algebraic representation shows this dilation?

• (x, y) --> (2x, 2y)

• (x, y) --> (0.5x, 0.5y)

• (2x, 2y) --> (x, y)

• (x, y) --> (3x, 2y)

Triangle ABC is dilated by a scale factor of one-half to form Triangle A’B’C’ with the origin as a center of dilation. Which rule represents this dilation?

• (x, y) --> (2x, 2y)

• (x, y) --> (1/2x, 1/2y)

• (2x, 2y) --> (x, y)

• (x, y) --> (1/3x, 1/3y)

Triangle A’B’C’ is the dilation of triangle ABC.

Which algebraic representation shows this dilation?

• (x, y) --> (2x, 2y)

• (x, y) --> (1/3x, 1/3y)

• (x, y) --> (3x, 3y)

• (x, y) --> (x + 3, y - 3)

Is this an enlargement or a reduction?

• Enlargement

• Reduction

Does the image show a Dilation?

• Yes

• No

Which rule best represents the dilation?

• (2x, 2y)

• (3x, 3y)

• (1/3x 1/3y)

• (1/2x, 1/2y)

Which rule best represents the dilation?

• (2x, 2y)

• (1/2x, 1/2y)

• (4x, 4y)

• (1/4x, 1/4y)

Which rule best represents the dilation?

• (2x, 2y)

• (-2x, -2y)

• (1/2x, 1/2y)

• (x, y)

If your Scale Factor = 6/5, what type of dilation is it?

• Reduction

• Enlargement