Transformations GEO TEST 24-25

Front

What are the coordinates of the image when point A(2,5) is reflected in the y-axis?

Back

A'(-2,5)

Front

What transformation is represented by the vector < -5, 2 >?

Back

Reflect across y-axis

Front

If point A(30, 20) is dilated with a scale factor of K=\frac{1}{5}, what are the coordinates of A'?

Back

A' (6, 4)

Front

What are the coordinates of the image when point A(5, -2) is reflected in the x-axis?

Back

A'(5, 2)

Front

If point A(8,9) and B(4,7) are mapped using the vector < -5, -2 >, what are the coordinates of A' and B'?

Back

A' (3, 7), B' (-1, 5)

Front

Define reflection in geometry.

Back

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

Front

What is the effect of reflecting a point across the x-axis?

Back

The y-coordinate of the point changes sign.

Front

What is the effect of reflecting a point across the y-axis?

Back

The x-coordinate of the point changes sign.

Front

What is a dilation in geometry?

Back

A dilation is a transformation that alters the size of a figure but not its shape.

Front

How do you calculate the coordinates of a point after dilation?

Back

Multiply the coordinates of the point by the scale factor.