Transformations Review - Thank you, Mrs. Jordan!

Front

What is a dilation?

Back

When you enlarge or reduce a shape.

Front

What is the rule for translating a point?

Back

(x, y) → (x+a , y+b)

Front

What is a translation in geometry?

Back

When you move or slide a polygon from one place to another.

Front

How do you dilate a point B by a scale factor of 3?

Back

Multiply the coordinates of point B by 3.

Front

What does it mean to reflect a shape over the y-axis?

Back

To flip the shape across the y-axis, changing the sign of the x-coordinates.

Front

What is the scale factor in dilation?

Back

The ratio by which a shape is enlarged or reduced.

Front

What is the difference between translation and dilation?

Back

Translation moves a shape without changing its size, while dilation changes the size.

Front

What happens to the coordinates of a point (x, y) when reflected over the x-axis?

Back

The new coordinates are (x, -y).

Front

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

Back

The shape is reduced in size.

Front

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

Back

The shape is enlarged.