Scale Factor and Dilation on Area and Perimeter

The red triangle has been dilated by a scale factor of 1/4, which triangle is it's new image? 

• green triangle 

• red triangle 

• black triangle

• none of these 

Dilate Point B by a scale factor of 1/2

• (1.5,-4)

• (-1.5,1)

• (-1,-1.5)

• (-2,-2)

The basic formula for scale factor puts the ORIGINAL measurement on the ________ of a fraction.

• outside

• inside

• bottom

• top

If the scale factor is 4, what is the measurement of x?

• 20 m

• 24 m

• 16 m

• 4 m

What is the scale factor from ABCD to MNOP?

• 2/3

• 3/2

• 2

• 3

If a scale factor of ½ is applied, what would be the algebraic representation for this dilation.

• (x, y)--> (2x, 2y)

• (x, y)--> (1/2x, 1/2y)

• (x, y)--> (x+2, y+2)

• (x, y)--> (x-2, y-2)

Does the image show a dilation?

• Yes

• No

Which proportion can we use to find 'x'?

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Which proportion can be used to solve for the missing side?

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Which proportion must be true?

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