You are Here: Home >< Maths

# Hoy do you solve this core 1 maths question? Watch

1. (Original post by d1ck)
I'd probably have to go back over my notes to try and figure this one out since I'm quite bad at translations Q5 part ii) - I would copy-paste the question but it won't let me :/
which is a translation... to the right/left? How many units?

also how would you q10 ii)

I thought maybe I could put P's X coord into the circle equation to get a Y where they intersect, and P's Y coord to get an X. And then use y-y1 = m x-x1, but I don't have a gradient and tbh what I'm doing doesn't really make alot of sense to me :/
You have two points: and - find the gradient of the line going through these two points then finished it off. You do know how to find the line going through two given points, yeah? Or how to find the gradient of the line given two coordinates on it? Change in y over change in x.
2. (Original post by Riya06)
Or you could just square the whole equation and solve it like a normal quadratic equation.

Edit: This is wrong
(Original post by Riya06)
Oh? That's weird. You can't do that? :/
You can do something similar: rearrange to get on one side then square and solve.
3. (Original post by Zacken)
which is a translation... to the right/left? How many units?

You have two points: and - find the gradient of the line going through these two points then finished it off. You do know how to find the line going through two given points, yeah? Or how to find the gradient of the line given two coordinates on it? Change in y over change in x.
to the right 4 units(?) btw how come you can just remove the square root sign in the f(x) bit?
Spoiler:
Show
i really hate translations brb crying

yeh I know how to find the gradient lol, the only thing is when I put eg. x=7 into the circles equation it will come out with a quadratic right? can I square root the whole equation so it's (7-5) + (y+2) = 5 instead or would that make it wrong?
4. (Original post by d1ck)
to the right 4 units(?) btw how come you can just remove the square root sign in the f(x) bit?
Spoiler:
Show
i really hate translations brb crying
yeh I know how to find the gradient lol, the only thing is when I put eg. x=7 into the circles equation it will come out with a quadratic right? can I square root the whole equation so it's (7-5) + (y+2) = 5 instead or would that make it wrong?
Why are you putting x=7 into the equation of the circle?
5. (Original post by Zacken)
Why are you putting x=7 into the equation of the circle?
idek lol

I thought that would give me coords to use y-y1 = m ( x-x1)
do i just use the coords of P for that then?
6. (Original post by d1ck)
do i just use the coords of P for that then?
Yes.

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:
Updated: March 30, 2016
Today on TSR

### Should I ask for his number?

Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• 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