Transformation Rules

Which rule would show a translation of 5 units up and 4 units left?

• (x-5, y+4)

• (x-4, y+5)

• (x-5, y-4)

• (x+4, y-5)

Point (-5, 2) is reflected over the y-axis.  Where is the new point located?

• (5, 2)

• (-5, -2)

• (-5, 2)

• (5, -2)

Tags

CCSS.8.G.A.1

CCSS.8.G.A.2

CCSS.8.G.A.3

Point (7, 2) is translated up 2 units and left 5 units. Where is the new point located?

• (9, -3)

• (2, 4)

• (2, 0)

• (12, 4)

Tags

CCSS.8.G.A.1

CCSS.8.G.A.2

CCSS.8.G.A.3

What transformation is happening?
(x, y) ----> (x + 2, y - 3) 

• translate up 2, left 3

• translate right 2, up 3

• translate right 2, down 3

• translate left 3, right 2

Tags

CCSS.8.G.A.1

CCSS.8.G.A.3

What is the algebraic representation for a reflection over the x-axis ?

• ( x , - y ) ----> ( x , - y )

• (- x , y ) ----> ( x , y )

• ( x , y ) ----> ( - x , y )

• ( x , y ) ----> ( x , - y )

What is the algebraic representation for a reflection across the y-axis ?

• ( x , y ) ----> ( x , - y )

• ( x , - y ) ----> ( - x , y )

• ( x , y ) ----> ( - x , y )

• ( - x , y ) ----> ( x ,- y )

What is the algebraic representation for a translation ?

• ( x , y ) ----> ( - x , y )

• ( x , y ) ----> ( x + a, y +b )

• ( x , y ) ----> ( - x , y )

• ( x , y ) ----> ( a - x , b - y )

Dilating coordinates by a scale factor of 3 would result in which rule?

• (x , y) → (3x , 3y)

• (x , y) → (x + 3 , y + 3)

• (x , y) → (3xy)

• (x , y) → (2x , 2y)

Dilating the coordinate (5 , 8) by a scale factor of 4 would result in which new coordinate?

• (9 , 12)

• (20 , 8)

• (1 , 4)

• (20 , 32)

Dilating coordinates by a scale factor of ½ would result in which rule?

• (x , y) → (x - ½ , y - ½)

• (x , y) → (½x , ½y)

• (x , y) → ( x + ½ , y + ½)

• (x , y) → (2x , 2y)