Hey! Sign in to get help with your study questionsNew here? Join for free to post
 You are Here: Home >< A-levels

# Physics/maths - A-Level

Announcements Posted on
Four hours left to win £100 of Amazon vouchers!! Don't miss out! Take our short survey to enter 24-10-2016
REMINDER: Do not post your personal statement on TSR, otherwise you may have to rewrite it from scratch. Click here for more info. 11-10-2016
1. Will post a picture below
Honestly don't get what it is asking
Could someone explain to me please
Task:
The table below shows the formula for a particular physical relationship, and what has been plotted on the xx and yy axes. You should write down (in terms of the letters in the formula) what the y-intercept and gradient will be. If the graph is not going to be a straight line, write 'not straight' instead of a gradient.

Answer to number one (to maybe help you help me)
y-intercept is ϵ (epsilon) - don't even know what that means
2. I sort of get how to find the gradient
Would it just be like
change in y / change in x
so like i rearrange to get y / x then whats left is the gradient or what
3. YOu just need to think in terms of y=mx+c
so for V= E-Ir, V=y, E=c, m=-r, and x=I.
so y intercept is when x=0 so V=E. The symbol for the maximum E is epsilon. Gradient = -r as this is 'm'

make sense?
4. (Original post by pippabethan)
YOu just need to think in terms of y=mx+c
so for V= E-Ir, V=y, E=c, m=-r, and x=r.
so y intercept is when x=0 so V=E. The symbol for the maximum E is epsilon. Gradient = -r as this is 'm'

make sense?
Ohhh, yh makes sense!
Thanks
5. (Original post by pippabethan)
YOu just need to think in terms of y=mx+c
so for V= E-Ir, V=y, E=c, m=-r, and x=r.
so y intercept is when x=0 so V=E. The symbol for the maximum E is epsilon. Gradient = -r as this is 'm'

make sense?
x = I right?
Guessing it was a mistake or is it actually r
6. (Original post by AdeptDz)
x = I right?
Guessing it was a mistake or is it actually r
Oops yeah I did mean x=I. I'll correct it now

Write a reply…

Submit reply

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
that username has been taken, please choose another Forgotten your password?
2. this can't be left blank
this email is already registered. Forgotten your password?
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
your full birthday is required
1. Oops, you need to agree to our Ts&Cs to register
2. Slide to join now Processing…

Updated: September 26, 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

### Who is getting a uni offer this half term?

Find out which unis are hot off the mark here

### How to get a 1st class degree

Poll
Help with your A-levels

## All the essentials

### Student life: what to expect

What it's really like going to uni

### Essay expert

Learn to write like a pro with our ultimate essay guide.

### Uni match

Our tool will help you find the perfect course for you

### Create a study plan

Get your head around what you need to do and when with the study planner tool.

### Resources by subject

Everything from mind maps to class notes.

### Degrees without fees

Discover more about degree-level apprenticeships.

### Study tips from A* students

Students who got top grades in their A-levels share their secrets

## Study help links and info

Can you help? Study help unanswered threadsRules and posting guidelines

## Sponsored content:

### HEAR

Find out how a Higher Education Achievement Report can help you prove your achievements.

## Groups associated with this forum:

View associated groups
Study resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.