Dilation

Does the image show a Dilation?

• Yes

• No

Dilate Point A by a scale factor of 1/2

• (-4,-4)

• (-1,-4)

• (-1,-1)

• (-2,-2)

Dilate Point B by a scale factor of 3:

• (12,0)

• (12,12)

• (4,3)

• (0,12)

The point (8, 12) was dilated to become point (2, 3). What was the scale factor?

• ½

• ¼

• 4

• 2

The scale factor for this dilation is:

Mathematical Equivalence

ON

The __________ is the ratio of a length of the image to the corresponding length on the original figure.

• reduction

• enlargement

• scale factor

• center of dilation

State the coordinate of the image of the given point B (-10,-6) under a dilation with center at the origin with the given scale factor k = 1/2.

• (5,3)

• (20,12)

• (-20,-12)

• (-5,-3)

(x, y) -> (2x, 2y) 
What is the coefficient 2 mean?

• plot 2 to the right and 2 up

• scale factor is 2 creating a new figure half the size

• scale factor is 2 making a figure twice the 
  original

• I don't understand this question : ( 

Which of the following is the algebraic representation for a dilation?

• (x, y) → (x, 3y)

• (x, y) → (3x, 3y)

• (x, y) → (x, y - 3)

• (x, y) → (.5x, .4y)

What scale factor was used to produce the image?

• 2

• -2

• ¹/₂

• 1