Question

Is my answer correct?
A transformation T : (x, y) ---> (x + 3, y + 1).
The preimage of the point (4, 3) is ...... (7,4)?

Answer 1

If they were asking for the image of (4,3), then you'd be correct

Answer 2

Okay :)

Answer 3

You have to think backwards

you have some point (x,y) and when you use this transformation, you'll land on (4,3)

ie

(x,y) ----> (4,3)

Answer 4

Makes sense.. :) Thank you. Just had to clarify I was right. Can you tell me if I am right on two more questions?

Answer 5

Here's a handy diagram to remember image and preimage

Answer 6

sure

Answer 7

I wish I could save that drawing. Thank you.

The image of the point (1, -2) after a rotation of 180° about the origin is
... (-2,1)?

And

The point (5, -2) is rotated 90° about the origin. Its image is
...(-5,2)?

Answer 8

wait. The image of point 1,-2) isint the answer going to be (-1,2)? @jim_thompson5910

Answer 9

just print screen the image to save it

Answer 10

and the 5,2 just (2,5)?

Answer 11

The image of the point (1, -2) after a rotation of 180° about the origin is ... (-2,1)?

this is incorrect

Answer 12

The point (5, -2) is rotated 90° about the origin. Its image is ...(-5,2)?

depends on if you're going clockwise or counterclockwise

but the answer here is incorrect in either event

Answer 13

So my answers are (-1,2) and (2,5)?

Answer 14

much better

Answer 15

Thanks :)

Answer 16

np