Unit 1 Transformation PreQuiz

What is the algebraic rule?

• A
• B
• C
• D

Triangle RST has vertices R(1, 1), S(1, 4), and T(3, 1).  Graph the figure and its rotated image after a counterclockwise rotation of 180° about the origin. What are the coordinates of Tʹ ?

• (-3, -1)

• (-3,-2)

• (5,2)

• (5,4)

Which algebraic rule will produce a translation that is 5 units to the right?

• (x, y)  --> (  x ,  y + 5)

• (x, y)  --> (  x-5 ,  y + 5)

• (x, y)  --> (  x-2 ,  y + 5)

• (x, y)  --> (  x+5 ,  y)

What type of transformation is this?

• rotation

• translation

• reflection

• dilation

What type of transformation is this?

• rotation

• translation

• reflection

• dilation

Identify the transformation from ABCD to A'B'C'D'.

• Translation
• Reflection across the y-axis
• Reflection across the x-axis
• 90^o counter clockwise Rotation

Write a rule for the translation.

•  (x -1, y  + 2)
•  (x -2, y  + 1)
•  (x +2, y  - 1)
• (x +1, y  -  2)

(x,y) becomes (-y,x)

• Rotation of 270 CW

• Rotation of 90 CW

• Reflection over y = -x

• Reflection over y-axis

How many degrees was the figure rotated?

• 90 degrees counterclockwise 
• 180 degrees
• 270 counterclockwise 

∆BCD contains the points: B(2,3), C(2,1) and D(5,1). If the triangle is reflected across the x-axis, what will the coordinates of B' be?

• B'(2, -3)

• B'(-2, 3)

• B'(-2, -3)

• B'(2, 3)