Reflections in Coordinate Geometry

Front

What happens to the x-coordinate when a point reflects over the y-axis?

Back

It changes to its opposite sign.

Front

Is the statement 'The blue triangle is reflected over the x-axis' True or False?

Back

False.

Front

What is the algebraic representation for reflecting a figure over the x-axis?

Back

(x, y) --> (x, -y)

Front

If a figure is reflected over a line of symmetry, what can we say about its image?

Back

Its image is congruent to it.

Front

What do you change when reflecting a figure over the x-axis?

Back

Change the y-coordinate.

Front

What is reflection in geometry?

Back

It is flipping a shape over a line to create a mirror image.

Front

What is the line of reflection?

Back

It is the line over which a figure is reflected.

Front

When a point (3, 4) is reflected over the y-axis, what is the new point?

Back

(-3, 4)

Front

When a point (2, -5) is reflected over the x-axis, what is the new point?

Back

(2, 5)

Front

What does congruent mean in geometry?

Back

Two shapes are congruent if they are the same size and shape.