Transformation Review

Front

Reflect the point (2, -4) over the y-axis. What is the new point?

Back

(-2, -4)

Front

If the triangle ∆QRS with points Q(4, 2), R(5, 1), S(3, 7) is reflected across the y-axis, what will S' be?

Back

S'(-3, 7)

Front

What is the transformation rule for rotating a point 180° counterclockwise around the origin?

Back

(x,y)→(-x,-y)

Front

Is the picture being reflected in the y-axis or x-axis?

Back

y-axis

Front

Point (7,2) is translated vertically 2 units and horizontally -5 units. Where is the new point located?

Back

(2, 4)

Front

What is the definition of reflection in geometry?

Back

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

Front

What is the definition of rotation in geometry?

Back

A transformation that turns a figure around a fixed point.

Front

What is the definition of translation in geometry?

Back

A transformation that moves every point of a figure the same distance in the same direction.

Front

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

Back

The new coordinates are (x, -y).

Front

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

Back

The new coordinates are (-x, y).