Math Dilation

Which of the following statements is true?

• The dilation is an enlargement and the scale factor is > 1.

• The dilation is an enlargement and the scale factor is < 1.

• The dilation is a reduction and the scale factor is > 1.

• The dilation is a reduction and the scale factor is < 1.

Tags

8.3.C

Did the image enlarge, reduce or none of the above?

• Enlarge

• Reduce

• None of the above

An image is dilated at a scale factor of 1.5. This means the dilation is an enlargement and the dilated image will be bigger.

• True

• False

If the scale factor is between zero and one, the new figure will be

• an enlargement

• a reduction

• a scale factor

• bigger

Did the image enlarge, reduce or none of the above?

• Enlarge

• Reduce

• None of the above

Is this an enlargement or a reduction?

• Enlargement

• Reduction

Match the scale factor to its rule for a dilation.

• (x, y) → (3x, 3y)

• (x, y) → (0.3x, 0.3y)

• (x, y) → (x, y)

A triangle has vertices with coordinates (2,0), (3, -1) and (-2,-5). If the triangle is dilated by a scale factor of 3 with the origin as the center of dilation, what are the coordinates of the vertices of the image?

• (5,3), (6,2), (1,-2)

• (6,0), (9,-3), (-6,-15)

• (2/3,0), (1,-1/3), (-2/3,-5/3)

• (-1,-3), (0,-4), (-5,-8)

Dilate Point B by a scale factor of 1/2

• (1.5,-4)

• (-1.5,1)

• (-1,-1.5)

• (-2,-2)

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image?

• A'(9,9) B'(18,18) C'(27,9)

• A'(6,6) B'(9,9) C'(12,6)

• A'(0,0) B'(3,3) C'(6,0)

• A'(1,1) B'(2,2) C'(3,1)