Dilations

Front

What is the definition of a pre-image in the context of transformations?

Back

The figure before a transformation has occurred.

Front

What is the definition of an image in the context of transformations?

Back

The figure after a transformation has occurred.

Front

If point C has coordinates (x, y), what are the coordinates of the image of point C after a dilation with a scale factor of 1/2?

Back

The coordinates of the image of point C after a dilation with a scale factor of 1/2 and center point P are (-6, 1).

Front

What is a scale factor in the context of dilations?

Back

A scale factor is a number that scales, or multiplies, the dimensions of a figure during a dilation.

Front

How do you determine the coordinates of an image after a dilation?

Back

Multiply the original coordinates by the scale factor.

Front

What is the scale factor used to produce an image if the original figure is scaled up by a factor of 7?

Back

The scale factor is 7.

Front

What are the coordinates of the image of point B after a dilation with a scale factor of 2 centered at point A?

Back

The coordinates of the image of point B after a dilation with a scale factor of 2 are (-4, 6).

Front

What happens to the size of a figure when a dilation is applied with a scale factor greater than 1?

Back

The figure increases in size.

Front

What happens to the size of a figure when a dilation is applied with a scale factor less than 1?

Back

The figure decreases in size.

Front

What is the center of dilation?

Back

The fixed point in a dilation from which all points are expanded or contracted.