Unit 7 Test Review - Transformations

Front

What is a reflection in geometry?

Back

A reflection is a transformation that flips a figure over a line, creating a mirror image.

Front

How do you reflect a point across the x-axis?

Back

To reflect a point (x, y) across the x-axis, the new point will be (x, -y).

Front

What is the result of reflecting the point (-6, -2) across the x-axis?

Back

The new location is (-6, 2).

Front

What is a rotation in geometry?

Back

A rotation is a transformation that turns a figure around a fixed point, called the center of rotation.

Front

What is the algebraic representation of a 90-degree clockwise rotation of point (x, y)?

Back

The representation is (y, -x).

Front

What is a translation in geometry?

Back

A translation is a transformation that slides a figure from one position to another without changing its shape or orientation.

Front

How do you translate a point (a, b) 12 units left and 3 units up?

Back

The new point will be (a - 12, b + 3).

Front

What is a dilation in geometry?

Back

A dilation is a transformation that changes the size of a figure but not its shape, using a scale factor.

Front

What is the algebraic representation of a dilation with a scale factor of 3 for point (x, y)?

Back

The representation is (3x, 3y).

Front

What is the term for a slide in geometry?

Back

A slide is also called a translation.