Q2 W5 Flashcard 2 (Dilations and Distance Formula)

Front

What is the distance formula used to calculate the distance between two points (x1, y1) and (x2, y2)?

Back

Front

What does a scale factor greater than 1 indicate in a dilation?

Back

The image will be enlarged or magnified.

Front

What does a scale factor less than 1 indicate in a dilation?

Back

The image will be reduced or shrunk.

Front

If a triangle is dilated using the rule (x, y)→(kx, ky), what does k represent?

Back

k is the scale factor of the dilation.

Front

What are the coordinates of point C' if point C(6, -3) is dilated using the rule (x, y)→(2x, 2y)?

Back

C' = (12, -6)

Front

True or False: A dilation produces a congruent figure.

Back

False.

Front

What is the scale factor if a figure is reduced to half its size?

Back

The scale factor is 1/2.

Front

What is the distance between the points (3, 4) and (7, 1)?

Back

Front

What is the effect of a dilation with a scale factor of 1?

Back

The figure remains the same size.

Front

What is the distance between the points (0, 0) and (5, 12)?

Back