You are Here: Home >< Maths

# c1 solomon paper c

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
1. Just doing some revision - not sure what it means exactly with question 8 from paper c - c1 solomon papers.

Figure one shows the graph of y = f(x)

Write down the number of solutions that exist for the equation

f(x) = 1

f(x) = - x

Answer in the mark scheme say 3 and 1 respectively but just not sure what the questions means....

Must be something simply because its only worth two marks. ..
2. (Original post by christinajane)
Just doing some revision - not sure what it means exactly with question 8 from paper c - c1 solomon papers.

Figure one shows the graph of y = f(x)

Write down the number of solutions that exist for the equation

f(x) = 1

f(x) = - x

Answer in the mark scheme say 3 and 1 respectively but just not sure what the questions means....

Must be something simply because its only worth two marks. ..
You dont understand it, f(x)=1, whats f(x) and when it equals 1, how many solutions or points are there , and same for the next one, figure it out

Posted from TSR Mobile
3. Its a bit of a funny graph - doesn't give you f(x)

It touches the x axis at -2 and 2 - so I thought f(x) = (x-2)(x+2) or (x-4)^2

But the graph isn't a curve so its kinda throwing me little - hmmm
4. (Original post by christinajane)
Its a bit of a funny graph - doesn't give you f(x)

It touches the x axis at -2 and 2 - so I thought f(x) = (x-2)(x+2) or (x-4)^2

But the graph isn't a curve so its kinda throwing me little - hmmm
f(x) is the same as writing 'y', so all you do is draw the line f(x) = 1, otherwise known as y=1 on the graph they give you, then see how many times the line y=1 crosses the line drawn on the graph. This is the number of solutions you are looking for.

Do the same for f(x) = -x
5. Ahhh yes!

I thought I had to figure out f(x) by looking at the graph, because it doesn't give you f(x) - expand brackets etc equate it to one and find the solutions that way... over complicating matters
6. (Original post by christinajane)
Ahhh yes!

I thought I had to figure out f(x) by looking at the graph, because it doesn't give you f(x) - expand brackets etc equate it to one and find the solutions that way... over complicating matters
That would work if they gave you an equation. This question is simpler too
7. is the equation of this graph not (X-2)(X-2)(X+2)?

## 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 16, 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

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