Dilations Algebraic Representations

Is this an enlargement or a reduction?

• Reduction

• Enlargement

How do you write the algebraic notation when the scale factor is 3?

• (x, y) goes to (1/3x, 1/3y)

• (x, y) goes to (-3x, -3y)

• (x, y) goes to (x + 3, y + 3)

• (x, y) goes to (3x, 3y)

Triangle A(2,5), B(1,-1), and C(-3,1) is dilated using the algebraic representation of (3x,3y). What is the new value of C’?

• (9,3)

• (-9,3)

• (-9,-3)

• (-1, -1/3)

What is the scale factor in the algebraic representation
(x,y) to (2x,2y)

• k=2

• k=1/2

• k=2.2

• k=0.5

If the scale factor is greater than one, the new figure will be

• reduction

• enlargement

• scale

• not proportional

In a dilation what mathematical operation is used with the scale factor?

• addition 

• subtraction 

• multiplication 

• division 

What is the scale factor?

• 1

• 2

• 1/2

• -2

what is the scale factor?

• 1

• 3

• 1/3

• 8

_________ ________ is the number you multiply by the sides to create a similar figure.

• Scale Factor

• Corresponding Angle

• Pi

• Mid Point

How do you write the algebraic notation when the scale factor is 1/2?

• (x, y) goes to (2x, 2y)

• (x, y) goes to (1/2x, 1/2y)

• (x, y) goes to (-2x, -2y)

• (x, y) goes to (2x, 1/2y)