You are Here: Home >< Maths

# CIE P1 Question watch

1. Test whether the given point lies on the straight line (or curve) with the given equation.

(p, (p-1)^2 + 1) on y = x^2 - 2x + 2

(p-1)^2 + 1 = p^2 - 2p + 2

p^2 + 1 + 1 = p^2 - 2p + 2

p^2 = p^2 - 2p

The point does not satisfy the equation.

Where am I going wrong?
2. (Original post by goodgrief)
Test whether the given point lies on the straight line (or curve) with the given equation.

(p, (p-1)^2 + 1) on y = x^2 - 2x + 2

(p-1)^2 + 1 = p^2 - 2p + 2

p^2 + 1 + 1 = p^2 - 2p + 2

p^2 = p^2 - 2p

The point does not satisfy the equation.

Where am I going wrong?

Edit: I see you had that. You have the answer in your second line. Not sure what you're doing after that.

Oh I see now. (p-1)^2 is not p^2+1. Multiply out (p-1)(p-1).
3. (Original post by BabyMaths)
My brain is not awake today. Thank you!

### Related university courses

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: September 24, 2014
The home of Results and Clearing

### 2,122

people online now

### 1,567,000

students helped last year
Today on TSR

### How did it go?

A-level results chat here

### University open days

1. London Metropolitan University
Sat, 18 Aug '18
2. Edge Hill University
Sat, 18 Aug '18
3. Bournemouth University
Sat, 18 Aug '18
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