Reflections

Front

What is a reflection in geometry?

Back

A reflection is when you flip or mirror an object across a line.

Front

What is the Mapping Notation for a reflection across the x-axis?

Back

(x, y) → (x, -y)

Front

What is the Mapping Notation for a reflection across the y-axis?

Back

(x, y) → (-x, y)

Front

What is the Mapping Notation for a reflection across the line y = x?

Back

(x, y) → (y, x)

Front

Reflect the point (3, 5) over the x-axis. What is the new point?

Back

(3, -5)

Front

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

Back

(2, 4)

Front

If point A(1, 2) is reflected over the y-axis, what are the coordinates of A'?

Back

A'(-1, 2)

Front

If point B(-3, -4) is reflected over the x-axis, what are the coordinates of B'?

Back

B'(-3, 4)

Front

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

Back

The x-coordinate remains the same, and the y-coordinate changes sign.

Front

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

Back

The y-coordinate remains the same, and the x-coordinate changes sign.