Dilations Algebraic Rule

Which of the following algebraic rules represents a dilation? Select all that apply.

• (x, y) --> (3x, 3y)

• (x, y) --> (3x, 2y)

• (x, y) --> (x - 3, y + 5)

• (x, y) --> (0.5x, 0.5y)

• (x, y) --> (3x, 0.5y)

Triangle ABC will be dilated using the rule (x, y)→(2x, 2y). What will be the coordinates of C'? Write your answer with no spaces.

Write the algebraic rule for the dilation. Don't put any spaces in your answer.

Write an algebraic rule for the dilation. Don't put any spaces in your answer. (HINT: Use point D to figure it out)

What is the algebraic rule for the dilated image? 

• (x, y) --> (2x, 2y)

• (2x, 2y) --> (x, y)

• (x, y) --> (0.5x, 0.5y)

• (x, y) --> (x+1, y+2)

What is the scale factor for the dilated image? 

• 2

• 3/2

• 1/2

• 2/3

Which of the following algebraic rules represents a dilation?

• (x, y) --> (3x, 3y)

• (x, y) --> (3x, 2y)

• (x, y) --> (x - 3, y + 5)

• (x, y) --> (0.5x, 0.5y)

• (x, y) --> (3x, 0.5y)

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

• (x, y) → (2x, 2y)

• (x, y) → (1/2x, 1/2y)

• (x, y) → (-2x, -2y)

• (x, y) → (2x, 1/2y)

Tags

8.3.C

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)

Point A is ( 7, 3) and Point A' is ( 21, 9). What is the algebraic rule for this dilation if the center of dilation is at the origin?