Unit 4 Quiz Review

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image?
A(3,3) B(6,6) C(9,3)

• A'(9,9) B'(18,18) C'(27,9)
• A'(6,6) B'(9,9) C'(12,6)
• A'(0,0) B'(3,3) C'(6,0)
• A'(1,1) B'(2,2) C'(3,1)

Tags

CCSS.8.G.A.3

Enlargement or reduction?  Find the scale factor!

• It's a reduction; the scale factor is 2.
• It's an enlargement; the scale factor is 2.
• It's an enlargement; the scale factor is 1/2.
• It's a reduction; the scale factor is 1/2.

Tags

CCSS.8.G.A.3

The point A (8, 12) was dilated to become point A' (2, 3). What was the scale factor?(hint: divide the x-coordinate of the image by the x-coordinate of the preimage).

• ½

• ¼

• 4

• 2

Tags

CCSS.8.G.A.3

Find missing side

• 5
• 7
• 9
• 11

Determine if the triangles are similar. Justify. Scale factor?

• yes ~, Scale Factor is 4:1.

• yes ~, Scale Factor is 1:2.

• Yes ~, Scale Factor is 3:1.

• no, not similar

Tags

CCSS.HSG.SRT.A.2

Which of the statements is true about the graphed triangles?

• They are similar with a scale factor of 2.

• They are similar with a scale factor of 1/2.

• They are not similar with a scale factor of 2.

• They are not similar with a scale factor of 1/2.

Tags

CCSS.HSG.SRT.A.2

CCSS.8.G.A.4

Solve the proportion.

• p=31.3
• p=308
• p=924
• p=532

Tags

CCSS.6.EE.B.7

What is the scale factor from ΔDEF to ΔABC?

• 1/2

• 7/3

• 2

• 10/3

Tags

CCSS.HSG.SRT.A.2

CCSS.8.G.A.4

Find side length X.

• 30
• 25
• 15
• 40

Tags

CCSS.HSG.SRT.A.2

• X = 15

• X = 20

• X = 25

• X = 18

Tags

CCSS.HSG.SRT.A.2