TCAP Success Grade 8 MATH Chapter 10

1 pt

3.

How was square ABCD reflected?

A

across the x-axis

B

across the y-axis

C

across the y = x

D

It wasn’t reflected; it was translated.

1 pt

7.

How was square ABCD **rotated**?

A

no turn about the origin

B

90° turn about the origin

C

180° turn about the origin

D

90° counterclockwise about the origin

1 pt

10.

What type(s) of transformation(s) occurred between $\u29cdF\u2019G\u2019H\u2019\phantom{\rule{0ex}{0ex}}$ and $\u29cdFGH\phantom{\rule{0ex}{0ex}}$?

A

reflection and dilation

B

translation and dilation

C

dilation

D

rotation and reflection

1pt

13.

Segment $\overline{)FG}\phantom{\rule{0ex}{0ex}}$ begins at point G(7,3), and ends at point F(3,0). The segment is translated left 6 units and up 5 units, and then reflected across the x-axis to form segment F′G′.

**Part A.**

What are the coordinates of point F’?

1 pt

14.

Read the following conjecture.

When a polygon is reflected across the x-axis, all of the y-coordinates will become negative, and the x-coordinates will stay the same.

Develop a chain of reasoning to justify or refute the conjecture. Demonstrate that the conjecture is always true or that there is at least one example in which it is not true.