Staar Questions Transformations

State the coordinate of the image of the given point B (4,9) under a dilation with center at the origin with the given scale factor of 2.

• B' (2 , 4.5)

• B' (8 ,18)

• B' (-8 ,-18)

• 
  B' (9 ,4)

Dilate Point B by a scale factor of 3:

• (12,0)

• (4,3)

• (12,12)

• (0,12)

Describe the transformation: (x-2, y+7)

• Translation 2 units to the left & 7 units up

• Translation 2 units to the right & 7 units up

• Translation 2 units to the left & 7 units down

• Translation 2 units to the right & 7 units down

Write a rule for the translation.

• (x -1, y  + 2)

• (x +2, y  - 1)

• (x -2, y  + 1)

• (x +1, y  -  2)

Find K' if the figure is reflected across the x-axis.

• (4, 1)

• (1, -4)

• (-1, -4)

• (1, 4)

Translate the point A (-3, 4) right 5 and up 1

• (2, 5)

• (-2, 9)

• (8, 3)

• (-8, 5)

Which transformation does not preserve congruence?

• translation

• rotation

• reflection

• dilation

Quadrilateral ABCD was dilated with the origin as the center of dilation to create quadrilateral A'B'C'D'. Which rule best represents the dilation that was applied to quadrilateral ABCD to create A'B'C'D'?

• (x, y) -> (0.5x, 0.5y)

• (x, y) -> (x + 2, y + 2)

• (x, y) -> (2x, 2y)

• (x, y) -> (0.2x, 0.2y)

Quadrilateral QRST is shown in the graph below. Use this diagram to answer all the questions on this page. The rule (x, y) -> (x - 1, y - 2) is applied to form Q'R'S'T'. What are the vertices of Q'R'S'T'?

• (-8, 3), (1, 4), (0, 1), and (-7, 0)

• (-7, 2), (2, 3), (1, 0), and (-6, -1)

• (-5, 2), (4, 3), (3, 0), and (-4, -1)

• (-4, 5), (5, 6), (4, 3), and (-3, 2)

Which of the following graphs correctly show A'B'C'D' if the rule (x, y) → (½ x, ½ y²) is applied to ABCD?

• Diagram F

• Diagram G

• Diagram H

• Diagram J