You are Here: Home >< Maths

Translations help

Announcements Posted on
Last day to win £100 of Amazon vouchers - don't miss out! Take our quick survey to enter 24-10-2016
1. HI

I get that it is a stretch in x direction but i don't understand how you work out the scale factor?
Any help?
Many thanks
2. (Original post by pygmypossum)
HI

I get that it is a stretch in x direction but i don't understand how you work out the scale factor?
Any help?
Many thanks
If you call the first one then you should spot the second one is . Can you see why this is true?

The transformation is a stretch scale factor parallel to the x-axis.
3. (Original post by Zacken)
If you call the first one then you should spot the second one is . Can you see why this is true?

The transformation is a stretch scale factor parallel to the x-axis.
No sorry I don't understand how its (2x)??
4. (Original post by pygmypossum)
No sorry I don't understand how its (2x)??
If you have then if you replace all the x's with 2x you get , which is precisely the second function you have.
5. (Original post by Zacken)
If you have then if you replace all the x's with 2x you get , which is precisely the second function you have.
Ah that makes sense! So is the answer 1/2?
6. (Original post by pygmypossum)
Ah that makes sense! So is the answer 1/2?
Yeah.
7. (Original post by Zacken)
Yeah.
Thank you!
8. (Original post by pygmypossum)
Thank you!
No problem. :-)

Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: May 21, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

How does exam reform affect you?

From GCSE to A level, it's all changing

Poll
Useful resources

Maths Forum posting guidelines

Not sure where to post? Read here first

How to use LaTex

Writing equations the easy way

Study habits of A* students

Top tips from students who have already aced their exams

Chat with other maths applicants