Transformations Practice #1

When a dilation has a scale factor greater than one, the dilation is an enlargement.

• True
• False

Tags

CCSS.8.G.A.3

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

• (x, y) --> (1/3x, 1/3y)

• (x, y) --> (-3x, -3y)

• (x, y) --> (x + 3, y + 3)

• (x, y) --> (3x, 3y)

Tags

CCSS.8.G.A.3

Rectangle ABCD is dilated by a scale factor of 3/2. What could be the dilation rule?

• (x,y) --> (2x, 3y)

• (x,y) --> (2/3 x, 2/3 y)

• (x,y) --> (3/2 x, 3/2 y)

• (x,y) --> (x + 2, y + 3)

Tags

CCSS.HSG.CO.A.2

Enlargement or reduction? Find the scale factor!

• It's an enlargement.

• It's a reduction.

Tags

CCSS.8.G.A.3

Describe the given translation:

(x, y) ----> (x + 2, y - 3)

• slide up 2 units and left 3 units

• slide right 2 units and up 3 units

• slide right 2 units and down 3 units

• slide left 3 units and right 2 units

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the algebraic rule for a translation 2 units right and 5 units up?

• (x, y) --> (2x, 5y)

• (x, y) --> (x + 2, y + 5)

• (x, y) --> (x + 5, y + 2)

• (x, y) --> (5x, 2y)

Triangle ABC was translated 3 units right and 4 units down. Which of the following algebraic rules represents the translation?

• (x,y) --> (x + 3, y - 4)

• (x,y) --> (x - 4, y + 3)

• (x,y) --> (3x, -4y)

• (x,y) --> (-4x , 3y)

Does a translation preserve orientation? (all coordinates stay in same order, position)

• yes

• no

A pentagon is graphed on a coordinate grid and then reflected across the x-­axis. If the center of the original circle was located at (x,y), which ordered pair represents the center of the new circle after the transformation?

• (x, y) --> (-y, x)

• (x, y) --> (x, -y)

• (x, y) --> (-x, y)

• (x, y) --> (-x, -y)

The rule for reflection over the y-axis is

(x, y) --> ?

• (-x, y)

• (x, -y)

• (y, x)

• (-y, x)