Transformations Pre-Flashcard

Front

What is a reflection in geometry?

Back

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

Front

What is the line of reflection for the point (-5,2) over the y-axis?

Back

The line of reflection is the y-axis.

Front

What is the new location of the point (-5,2) after reflecting over the y-axis?

Back

(5,2)

Front

What do we call the original figure before a transformation?

Back

Pre-Image

Front

What do we call the figure after a transformation?

Back

Image

Front

If a point is reflected over the x-axis, what happens to its y-coordinate?

Back

The y-coordinate changes sign.

Front

If a point (x,y) is reflected over the y-axis, what is its new coordinates?

Back

(-x,y)

Front

What is a translation in geometry?

Back

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

Front

If a point is translated 4 units to the right and 3 units down, how do you find the new coordinates?

Back

Add 4 to the x-coordinate and subtract 3 from the y-coordinate.

Front

What quadrants will the point (2, -1) be in after reflecting over the y-axis and translating 4 to the right and 3 down?

Back

Quadrant III and IV.