Transformations Rules EOC Review

Front

What is the result of a 90° rotation counterclockwise of the point (x, y)?

Back

(-y, x)

Front

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

Back

(x, -y)

Front

What is the result of a 180° rotation counterclockwise of the point (x, y)?

Back

(-x, -y)

Front

What is the result of a 90° rotation clockwise of the point (x, y)?

Back

(y, -x)

Front

How is the scale factor of a dilation calculated?

Back

k = \frac{image}{pre-image}

Front

What is the transformation rule for a reflection across the y-axis?

Back

(-x, y)

Front

What is the transformation rule for a reflection across the line y = x?

Back

(y, x)

Front

What is the transformation rule for a dilation centered at the origin with a scale factor of k?

Back

(kx, ky)

Front

What is the transformation rule for a 270° rotation counterclockwise of the point (x, y)?

Back

(y, -x)

Front

What is the transformation rule for a 360° rotation of the point (x, y)?

Back

(x, y)