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Unit 8B Review

Authored by Jeff Spotts

Mathematics

8th - 9th Grade

CCSS covered

Used 14+ times

Unit 8B Review
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Triangle ABC has vertices A(2,3), B(4,10), and C(6,2). If ABC is dilated with a center at the origin by a factor of 1/3, what will the coordinate of C' be?

(18,6)

(2,2/3)

(6.3,2.3)

(2/3,1)

Tags

CCSS.8.G.A.3

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Rectangle ABCD has vertices A(-4,8), B(5,8), C(-4,-12), D(5,-12). After a dilation centered about the origin, C' is at (-2,-6). What will the coordinate of D' be?

(5/2,4)

(-2,4)

(10,-24)

(5/2,-6)

Tags

CCSS.8.G.A.3

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

A man is standing near a power line pole as shown in the image below. The bottom of the support wire of the pole is 10.5 feet from its base. The man is six feet tall. When the man’s head touches the support wire, his feet are 4.5 feet from the end of the wire. Both the man and the pole are perpendicular to the ground. How tall is the power line pole?

14 ft

15 ft

16 ft

17 ft

18 ft

Tags

CCSS.8.G.B.8

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A triangle enthusiast is building a scale model replica of a life-size triangle action figure he owns. The triangles will be similar. The base of the original triangle is 4 feet. If the height of the model is 27 inches and the base is 18 inches, how tall is the original triangle?

3 feet

4 feet

5 feet

6 feet

7 feet

Tags

CCSS.HSG.SRT.A.2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Triangles ABC and DEF are similar. What is the value of x? Round to the nearest tenth.

28.2

10.1

43.6

16.7

Tags

CCSS.HSG.SRT.A.2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Line m has the equation y = 2x + 8. Line n is the result of dilating n about the point (0,2) with a scale factor of 3. What are the slope and y-intercept of line n?

Slope: 2

y-intercept: 20

Slope: 2

y-intercept: 24

Slope: 2

y-intercept: 8

Slope: 3

y-intercept: 8

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Triangle N' is the result of dilating triangle N. What is the center of dilation?

A

B

C

D

Tags

CCSS.8.G.A.3

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