You are Here: Home >< A-levels

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. I have tried to do this question and my textbook is not helping. Can someone explain how to do this even if you don't give the answer. Thanks for your help.
The question is: y=x^2+8x+19 so state the co-ordinates of the minimum point and the point where the graph crosses the y-axis. Then sketch the graph.

I have completed the square to find the minimum point which is (-4,-3). The graph crosses y-axis at 19 but how can you plot it without the x values. In order to find them out you have to factorise but you can't factorise this equation! Please help and thank you in advance.
2. You completed the square wrong. The co-ordinates of the vertex are actually (-4,3).
3. (Original post by W. A. Mozart)
You completed the square wrong. The co-ordinates of the vertex are actually (-4,3).
Hi thanks for replying I just realised that and I have solved the 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: October 1, 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

## 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.

### 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.

### Study tips from A* students

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