Application for Test #3 Retake (Dilations)

A scale factor that is less than one means

• The pre-image will be enlarged.

• The scale factor should be subtracted from the coordinates.

• The image is larger than the pre-image.

• The pre-image will be reduced.

Tags

CCSS.8.G.A.3

Which scale factor would enlarge a figure?

• 3.5

• 0.5

• 1/3

• 5/8

Tags

CCSS.8.G.A.3

Solve for X.

• 2 ft
• 3 ft
• 4 ft
• 6 ft

Tags

CCSS.HSG.SRT.A.2

Tell whether the two figures are congruent or similar.

• Congruent, because their sides are the same.

• Congruent, because their sides are proportional.

• Similar, because their sides are the same.

• Similar, because their sides are proportional.

• They are not congruent or similar.

Tags

CCSS.8.G.A.2

Choose the correct scale factor:

• 2.5

• 1.5

• 3.5

• 4

Tags

CCSS.7.G.A.1

State the coordinate of the image of point B (-10,-6) after a dilation with a scale factor of 1/2.

• (5,3)

• (20,12)

• (-20,-12)

• (-5,-3)

Tags

CCSS.8.G.A.3

Is A'B'C' a dilation of ABC?

• Yes

• No

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

A triangle has vertices with coordinates A(2,0), B(3, -1) and C(-2,-5). If the triangle is dilated by a scale factor of 3 with the origin as the center of dilation, what are the coordinates of C'?

• (1,-2)

• (-6,-15)

• (-2/3,-5/3)

• (-5,-8)

Tags

CCSS.8.G.A.3

The __________ is the ratio of a length of the image to the corresponding length on the original figure.

• reduction
• enlargement
• scale factor
• center of dilation

Tags

CCSS.7.G.A.1

A triangle has vertices A(0,0), B(8,0), C(3,-2). Find the coordinates of the triangle after a dilation with a scale factor of  4. The dilation is (X,Y) --- (4x,4y)

• A(3,3), B(4,4), C(-3,-4)
• A(-4,8), B(6.5,8), C(7,7)
• A(0,0), B(32,0), C(12,-8)

Tags

CCSS.8.G.A.3