Similarity Quiz 1 REVIEW.

Where will the point (8,7) be located after a dilation of k=4? (Centered at the origin)

• (32,28)

• (4,0)

• (0,4)

• (28,32)

Does a scale factor of k>1 indicate an enlargement or a reduction?

• Reduction

• Enlargement

• Neither

• Not this one.

A scale factor of k<1 indicates an enlargement or reduction?

• enlargement

• reduction

• neither

• DO NOT PICK ME.

The points A(5,8), B(4,-9) and C(-2,7) are dilated so that A'(10,16), B'(8,-18), C'(-4,14).

What is the scale factor that was used? (assuming centered at the origin)

• k=2

• k=1

• k=-2

• k=10

The point (14,-21) is dilated by a scale factor

so that the new point is (2,-3). (from the origin)

What is the scale factor that was used?

• k=2

• k=1/7

• k=7

• k=12

A dilation centered at the origin with a scale factor of k=1/9.

What is the new location of B' given the points below?

A(3,22) B(-90,63), C(72,81)

• B'(-10,7)

• B'(-810,567)

• B'(8,9)

• B'(648,729)

The apostrophe on the points indicate that point

is part of the ____________

(EX: A')

• pre-image

• image

• club

• cool kids

A dilation of k=2 centered at the origin will

_________ the size of the original figure?

• halve

• double

• triple

• not me.

The given graph was dilated by a factor of k=1/2.

WHAT IS THE CENTER OF DILATION?

• (4,4)

• (0,0)

• (4,0)

• (0,4)

The original figure is labeled ABCD.

The figure was dilated centered at (-4,-4).

WHAT IS THE SCALE FACTOR?

• k=2

• k=1/2

• k=1/3

• k=3