Math STAAR Review Transformations

If a shape is dilated, how do you find the new area?

• You multiply the old area by the scale factor used in the dilation.

• You square the scale factor used in the dilation. Then multiply the old area by the squared scale factor.

Tags

CCSS.7.G.A.1

Which of the following algebraic rules represents a dilation? Select all that apply.

• (x, y) --> (3x, 3y)

• (x, y) --> (3x, 2y)

• (x, y) --> (x - 3, y + 5)

• (x, y) --> (0.5x, 0.5y)

• (x, y) --> (3x, 0.5y)

Tags

CCSS.HSG.CO.A.2

Which of the following algebraic rules represents a reduction? Select all that apply.

• (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

Which of the following algebraic rules represents an enlargement? Select all that apply.

• (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

What is the algebraic representation for this dilation?

• ( x , y ) --> ( 25 x , 25 y )

• ( x , y ) --> ( 0.25 x , 0.25 y )

• ( x , y ) --> ( 2.5 x , 2.5 y )

• ( x , y ) --> ( x , y )

Tags

CCSS.HSG.CO.A.2

What is the algebraic representation for this dilation?

• ( x , y ) --> ( 3/7 x , 3/7 y )

• ( x , y ) --> ( 7/3 x , 7/3 y )

• ( x , y ) --> ( 3x , 7y )

• ( x , y ) --> ( x +3 , y +7 )

Tags

CCSS.HSG.CO.A.2

Triangle DEF was rotated 90^o clockwise about the origin to create triangle D'E'F'.

Which rule describes this transformation?

• (x,y)-->(-y,x)

• (x,y)-->(y,-x)

• (x,y)-->(-y,-x)

• (x,y)-->(-x,-y)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

• 90° clockwise

• 90° counter-clockwise

• 180° clockwise & counter-clockwise

• 270° counter-clockwise

• 270° clockwise

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

• 90° clockwise

• 90° counter-clockwise

• 180° clockwise & counter-clockwise

• 270° counter-clockwise

• 270° clockwise

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Point H was translated 7 units left and 5 units down to create triangle point H'. Which rule describes this transformation?

• (x,y)-->(-7x, -5x)

• (x,y)-->(x-7, y-5))

• (x,y)-->(7-x, y-5)

• (x,y)-->(y-7, x-5)

Tags

CCSS.HSG.CO.A.2