Dilations Algebra Rule

Figure S is dilated to create Figure T.  Which could be the scale factor of the dilation?

• (x, y)→(2x, 2y)

• (x, y)→(1/2 x, 1/2 y)

• (x, y)→(3x, 3y)

• (x, y)→(4x, 6y)

Tags

CCSS.HSG.CO.A.2

Quadrilateral WXYZ was dilated with the origin as the center to create quadrilateral W’X’Y’Z’. Which rule best represents the dilation that was applied to quadrilateral WXYZ to create quadrilateral W’X’Y’Z’?

• (x, y) --> (0.4x, 0.4y)

• (x, y) --> (x + 3, y + 2)

• (x, y) --> (2.5x, 2.5y)

• (x, y) --> (x - 3, y - 2)

Tags

CCSS.8.G.A.3

Trapezoid A’B’C’D’ is the dilation of trapezoid ABCD.
Which algebraic representation shows this dilation?

• (x, y) --> (2x, 2y)

• (x, y) --> (0.5x, 0.5y)

• (2x, 2y) --> (x, y)

• (x, y) --> (3x, 2y)

Tags

CCSS.HSG.CO.A.2

Enlargement or reduction?  Find the scale factor!

• It's an enlargement; the scale factor is 1/2.

• It's an enlargement; the scale factor is 2.

• It's a reduction; the scale factor is 1/2.

• It's a reduction; the scale factor is 2.

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

If the scale factor is less than 1, the dilation is...

• an enlargement

• a translation

• a rotation

• a reduction

Tags

CCSS.8.G.A.3

Triangle ABC is dilated by a scale factor of one-half to form Triangle A’B’C’ with the origin as a center of dilation. Which rule represents this dilation?

• (x, y) --> (2x, 2y)

• (x, y) --> (1/2x, 1/2y)

• (2x, 2y) --> (x, y)

• (x, y) --> (1/3x, 1/3y)

Tags

CCSS.8.G.A.3

Is this an enlargement or a reduction?

• Enlargement

• Reduction

Tags

CCSS.8.G.A.3

Is this an enlargement or a reduction?

• Enlargement

• Reduction

Tags

CCSS.8.G.A.3

Which of the following algebraic rules represents an enlargement?

• (x, y) --> (3x, 3y)

• (x, y) --> (0.5x, 0.5y)

• (x, y) --> (0.75x, 0.75y)

• (x, y) --> (0.999x, 0.999y)

• (x, y) --> (5x, 5y)

Tags

CCSS.8.G.A.3

Triangle E’F’G’ is a dilation of triangle EFG. Which rule best represents the dilation shown?

• (x, y) --> (2x, 2y)

• (x, y) --> (0.5x, 0.5y)

• (x, y) --> (x + 2, y - 2)

• (x, y) --> (2x, 0.5y)

Tags

CCSS.HSG.CO.A.2