Test Ch 4 Geometric Translations

Front

What is a geometric translation?

Back

A geometric translation is a transformation that moves every point of a figure or a space by the same distance in a specified direction.

Front

How do you translate a point (x, y) using a translation rule?

Back

To translate a point (x, y) using a rule (x + a, y + b), you add 'a' to the x-coordinate and 'b' to the y-coordinate.

Front

If A(2,5) is translated by the rule (x,y) --> (x+3, y-2), what are the coordinates of A'?

Back

A' will be located at (5, 3).

Front

Translate the point A (-3, 4) using the rule (x,y) --> (x + 5, y + 1). What are the new coordinates?

Back

The new coordinates will be (2, 5).

Front

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

Back

When a point (x, y) is reflected over the y-axis, its new coordinates become (-x, y).

Front

How do you determine the translation needed to move triangle A'B'C' to triangle ABC?

Back

You find the difference in coordinates between corresponding points of the triangles and express it as a translation rule.

Front

What is the translation rule for moving a point from (x, y) to (x + 2, y - 1)?

Back

The translation rule is to move 2 units to the right and 1 unit down.

Front

If a point C(3, 2) is reflected over the y-axis, what are the new coordinates?

Back

The new coordinates will be (-3, 2).

Front

What is the effect of translating a point 5 units to the left?

Back

Translating a point 5 units to the left subtracts 5 from the x-coordinate.

Front

What is the effect of translating a point 3 units up?

Back

Translating a point 3 units up adds 3 to the y-coordinate.