Ch. 9 Flashcard Review

Front

Reflect the point (-3, 5) over the line y = x.

Back

(5, -3)

Front

If you were to rotate ABCD 180° about the origin, what would the coordinates of B' be?

Back

(0, 0)

Front

What is the algebraic notation of a figure is Translated 2 units right and 5 units up?

Back

(x, y) --> (x + 2, y + 5)

Front

Dilate Point B by a scale factor of 1/2. What are the new coordinates?

Back

(-1.5, 1)

Front

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image for A(3,3) B(6,6) C(9,3)?

Back

A'(9,9) B'(18,18) C'(27,9)

Front

What is the formula for reflecting a point (x, y) over the line y = x?

Back

(y, x)

Front

What is the effect of a 180° rotation on the coordinates of a point (x, y)?

Back

(-x, -y)

Front

What does it mean to translate a figure in geometry?

Back

To move a figure without changing its shape or size.

Front

What is the scale factor in dilation?

Back

The ratio of the distance from the center of dilation to a point on the figure before and after dilation.

Front

How do you perform a translation of a point (x, y) by (a, b)?

Back

(x, y) --> (x + a, y + b)