Dilations Coordinate

If the scale factor is less than one, the new figure will be

• an enlargement

• a reduction

• a scale factor

• bigger

When a dilation has a scale factor greater than one, the dilation is an enlargement.

• True

• False

The __________ is the ratio of a length of the new figure to the corresponding length on the original figure.

• reduction

• enlargement

• scale factor

• center of dilation

A dilation is which of the following: 

• An enlargement

• A reduction

• Either an enlargement or a reduction

• Neither an enlargement or a reduction

What is the effect of a dilation on the coordinates of a point?

• The coordinates of the point are added to the scale factor.

• The coordinates of the point are multiplied by the scale factor.

• The coordinates of the point are divided by the scale factor.

• The coordinates of the point remain unchanged after dilation.

If a point has coordinates (3, 4) and is dilated by a scale factor of 2, what are the coordinates of the dilated point?

• (1, 2)

• (9, 12)

• (6, 8)

• (5, 6)

When a point is dilated by a scale factor of 0.5, what happens to its coordinates?

• They are divided by 0.5.

• They are subtracted by 0.5.

• They are multiplied by 0.5.

• They are added by 0.5.

If a point is dilated by a scale factor of 3, and its original coordinates are (2, 5), what are the coordinates of the dilated point?

• (6, 15)

• (3, 8)

• (8, 20)

• (5, 10)

If a point is dilated by a scale factor of 0.25, and its original coordinates are (-6, 8), what are the coordinates of the dilated point?

• (1.5, -2)

• (-12, 16)

• (-1.5, 2)

• (-3, 4)

Describe the effect of a dilation on the y-coordinate of a point.

• The y-coordinate is multiplied by the scale factor of the dilation.

• The y-coordinate is divided by the scale factor of the dilation.

• The y-coordinate is added to the scale factor of the dilation.

• The y-coordinate remains the same after dilation.