Module 8 Review Pre Algebra

The graph of △ABC is shown. Graph the image of △ABC after a translation of 2 units right and 3 units up. Write the coordinates of the image.

A'​ (a)   , B'​ (b)   , C'​ (c)  

• (-1,4)
• (-2,1)
• (1,3)

The preimage and image of ABCD are shown. Use coordinate notation to describe the translation

The graph of ∆XYZ is shown. Graph the image of ∆XYZ after a reflection across the x-axis. What are the coordinates of Z' ?

• Z'(2,0)

• Z'(0,2)

• Z'(-2,0)

• Z'(0,-2)

Triangle ABC is congruent to triangle PQR. Which transformation maps triangle ABC onto triangle PQR?

A​ ​ (a)   across the ​ (b)   .

• reflection
• y-axis
• x-axis
• origin
• rotation
• translation

Determine the angle of rotation. Assume the rotation is counterclockwise about the origin.

Triangle TRS has vertices T(-3,2), R(7,10), and S(7,4). Triangle TRS is reflected acorss the x-axis. The result is T'R'S'.

Choose the rule that describes the reflection mapping triangle TRS to triangle T′R′S′.

• 
• 
• 
• 

Triangle TRS has vertices T(-3,2), R(7,10), and S(7,4). Triangle TRS is reflected across the x-axis. The result is T'R'S'.

Choose the rule that describes the reflection mapping triangle TRS to triangle T′R′S′.

T' ​ (a)  

R' ​ (b)   ​

S'​ (c)  

• (-3,-2)
• (7,-10)
• (7,-4)

Are Figure A and Figure B congruent?

• yes

• no

Which transformation will map Figure A onto Figure B exactly?

• Translate Figure A to the left 6 units.

• Reflect Figure A over the x-axis.

• None of these.

In the figure above, a dilation from A to A' has occurred. What is the scale factor?

scale factor = _______

Mathematical Equivalence

ON