Translations Answers

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1
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What are the coordinates of P’ and L’?

A
P’(9, -6), L’(-2, 1)
B
P’(4, -6), L’(3, 1)
C
P’(9, -6), L’(3, 1)
D
P’(9, -1), L’(3, 6)
2
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What did you include in your response? Check all that apply.

A
The transformation rule should be applied to the pre-image.
B
The application of the rule results in the point (8, 12).
C
The transformation rule was applied to the wrong point.
3

Which are true statements about a translation? Select all that apply.

A
The image is congruent to the pre-image.
B
The image could be turned upside down.
C
The image could be moved left or right.
D
The image could be moved up or down.
E
The image could be a different size than the pre-image.
4

What are the coordinates of C’?

A
C’(4, –2)
B
C'(4, –0)
C
C'(4, 2)
D
C'(1, 2)
6

What are the coordinates of P'?

A
P’(1, 2)
B
P'(1, 1)
C
P'(1, –3)
D
P'(4, 4)
7

John says the transformation rule (x, y) (x + 4, y + 7) can be used to describe the slide of the pre-image (4, 5) to the image (0, –2). What was his error?

Answer:

The preimage is the point you start with. To check the transformation rule, substitute the values of the coordinates (4, 5) into the rule. You get (4, 5) → (44, 57). Simplify to get (4, 5) → (8, 12). This is the image. Instead the rule was applied to the image. This is the source of the error.

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Translations Answers — Pre-Algebra - MA3119 B-CR