Applying the Scale Factor to Coordinates

A dilation centered at the origin, with scale factor ½, of Figure A produces Figure B.

• True

• False

Tags

CCSS.HSG.CO.A.2

A dilation centered at (0, 0), with scale factor 2, is applied to the circle. The image of P is

• (2, 2)

• (4, 8)

• (8, 4)

• (8, 8)

Tags

CCSS.8.G.A.3

The rectangle is dilated by a scale factor of 4, centered at (0, 0). The image of R is

• (8, 4)

• (16, 8)

• (16, 32)

• (32, 16)

Tags

CCSS.8.G.A.3

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'(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

Triangle ABC will be dilated by a scale factor of 1/2.  What will be the coordinates of C'?

• (-1, -2.5)

• (12, 6)

• (3, -1.5)

• (0, 1.5)

Tags

CCSS.8.G.A.3

Rectangle ABCD is dilated so that A' is located at (3, 6).  What could be the dilation rule?

• (2x, 3y)

• (2/3 x, 2/3 y)

• (3/2 x, 3/2 y)

• (x + 2, y + 3)

Tags

CCSS.8.G.A.3

Dilate Point B by a scale factor of 1/2

• (1.5,-4)

• (-1.5,1)

• (-1,-1.5)

• (-2,-2)

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.7.G.A.1

Rectangle ABCD is dilated so that the coordinates of C' are (2, -1).  What could be the dilation rule?

• (-2x, +1y)

• (1/2 x, 1/2 y)

• (2x, 2y)

• (x - 2, y - 1)

Tags

CCSS.HSG.CO.A.2

Which algebraic expression could be the rule for a reduction?

• (x, y)→(2x, 2y)

• (x, y)→(5/2 x, 5/2 y)

• (x, y) →(0.5x, 0.5y)

• (x, y)→(5x, 5y)

Tags

CCSS.HSG.CO.A.2