Translations & Dilations

In a translation, the preimage and image are ___________.

• congruent

• similar

• different

• none of the above

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

When you translate, you ______ a number to x and y.

• Add or subtract
• Multiply or divide
• Add or multiply
• Subtract or divide

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

How is triangle ABC being translated to triangle A'B'C'?

• up 3, left 8
• up 9, left 4
• down 3, right 8
• down 9, right 4

Tags

CCSS.HSG.CO.A.2

Determine how to translate triangle ABC to triangle A'B'C'.

• (x, y) --> (x+2, y-5)

• (x, y) --> (x+2, y-9)

• (x, y) --> (x-2, y-9)

• (x, y) --> (x-2, y+9)

Tags

CCSS.HSG.CO.A.2

Triangle ABC has vertices at A(6, 1) B(1, 7) and C(-3, -2). The translation to create triangle A'B'C' is (x, y) goes to (x - 1, y + 2). Which will be the coordinates of triangle A'B'C'?

• A'(5, 2), B'(0, -4), C'(0, 9)

• A'(5, 3), B'(0, -4), C'(0, 8)

• A'(5, 3), B'(0, 9), C'(-4, 0)

• A'(5, 2), B'(1, -3), C'(0, 9)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

A scale factor of less than one means

• that the prime image will be larger than the pre-image.
• That the prime image will be the same as the preimage.
• That you need to subtract that amount off  of each side.
• That the prime image will be a reduction of the preimage.

Tags

CCSS.7.G.A.1

A dilation preserves which of the following characteristics?

• Congruence

• Similarity

• Both

• None of these

Tags

CCSS.8.G.A.3

How do you write the algebraic notation for a dilation from the origin with a scale factor of 3?

• (x, y) --> (1/3x, 1/3y)

• (x, y) --> (-3x, -3y)

• (x, y) --> (x + 3, y + 3)

• (x, y) --> (3x, 3y)

Tags

CCSS.8.G.A.3

The point (8, 12) was dilated from the origin to become point (2, 3). What was the scale factor?

• ½

• ¼

• 4

• 2

Tags

CCSS.8.G.A.3

Is this an enlargement or a reduction? What is the scale factor if the origin is the center of dilation?

• 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