Unit 6 Review 8th Grade

Algebraic Representation

100

Question 1

C. x,y→(7/5x,  7/5y)

200

Question 5

B. (x,y) --> (x-6, y+2)

300

Question 3

D. (-2n,5n)

400

Which algebraic representation represents a 180 rotation?

A. (x,y) --> (-y,x)

B. (x,y) --> (y,-x)

C. (x,y) --> (-x,-y)

D. (x,y) --> (-x,-y)

C. (x,y) --> (-x,-y)

500

Question 9 

D. (x, y) 🡪 (1/8x, 1/8y)

Other

100

What does congruence mean?

Relates to the size of a figure. 

200

Question 13

*YOU MUST BUBBLE CORRECTLY*

-7.5

300

Question 10 

B

400

Question 12

B. 1/2x units

500

What does orientation mean? 

Relates to the direction of a figure. 

What's True

100

Question 2

B. If a is between 0 and 1, the image of the triangle is smaller than the triangle.

200

True or False: A dilation is the only transformation that does NOT preserve congruence. 

True 

300

True or false: When the scale factor of a dilation is greater than 1 the figure will get smaller?

False

400

Question 11

C. The angle measures of triangle ABC are equal to the corresponding angle measures of triangle A’B’C’.

500

Which Statement is true?

A. A dilation preserves both congruence and orientation.

B. A reflection preserves both congruence and orientation.

C. A translation preserves both congruence and orientation.

D. A rotation preserves both congruence and orientation.

C. A translation preserves both congruence and orientation.

Identify Transformation

100

Question 4

C. (x,y)→(2x, 2y)

200

Question 6

B. (x,y) --> (-x,y)

300

What transformation is happening?

(x,y) --> (-x,-y)

180 rotation

400

Question 8

A. (x, y) 🡪 (x - 8, y - 7)

500

Question 7

C. (x, y) 🡪 (-y, x)