Extra Credit

Front

What is the line of reflection across the x-axis?

Back

The line of reflection across the x-axis is a horizontal line where each point (x, y) is reflected to (x, -y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

How do you dilate a point by a scale factor of 1/2?

Back

To dilate a point (x, y) by a scale factor of 1/2, multiply both coordinates by 1/2, resulting in (x/2, y/2).

Tags

CCSS.8.G.A.3

Front

Back

Front

What is a scale factor in dilation?

Back

A scale factor is a number that scales, or multiplies, the dimensions of a shape. For example, a scale factor of 2 doubles the size.

Tags

CCSS.8.G.A.3

Front

Back

Tags

CCSS.HSF-IF.C.8B

Front

What happens to a point when reflected across the y-axis?

Back

When a point (x, y) is reflected across the y-axis, it becomes (-x, y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the formula for dilating a point (x, y) by a scale factor k?

Back

The formula is (kx, ky).

Tags

CCSS.8.G.A.3

Front

Back

Tags

CCSS.8.EE.A.1

Front

How do you find the reflection of a point across the line y = 1?

Back

To reflect a point (x, y) across the line y = 1, use the formula (x, 2 - y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the effect of a scale factor less than 1 in dilation?

Back

A scale factor less than 1 reduces the size of the shape.

Tags

CCSS.8.G.A.3