Transformations Review 11/15

Front

What is the orientation of the x-axis?

Back

The x-axis is horizontal.

Front

What is the result of rotating point A(3, 5) 90° counterclockwise about the origin?

Back

The new coordinates A' will be (-5, 3).

Front

What is the scale factor in the transformation (x, y) → (3.5x, 3.5y)?

Back

The scale factor is 3.5.

Front

What is the rule for reflecting a point over the x-axis?

Back

The rule is to change the sign of the y-coordinate: (x, y) → (x, -y).

Front

What is the rule for translating a point down 6 units?

Back

The rule is (x, y) → (x, y - 6).

Front

What is the rule for translating a point left 2 units and down 2 units?

Back

The rule is (x, y) → (x - 2, y - 2).

Front

What happens to the coordinates of a point when it is reflected over the y-axis?

Back

The x-coordinate changes sign: (x, y) → (-x, y).

Front

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

Back

The figure shrinks towards the origin.

Front

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

Back

The figure enlarges away from the origin.

Front

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

Back

The rule is (x, y) → (-x, y).