62.9k views
0 votes
John says the transformation rule (x, y) es002-1.jpg (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?

2 Answers

6 votes

Sample Response: The pre-image 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) → (4+4, 5+7). 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.


User Pteromys
by
6.9k points
1 vote
John didn't check his work.

The appropriate transformation rule is (x -4, y-7).

_____
John's signs were in error.
User Yushin Washio
by
6.9k points