Brodie W. A Level Economics tutor, A Level Maths tutor, GCSE Maths tutor
£18 - £20 /hr

Brodie W.

Degree: Economics (Bachelors) - Durham University

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About me

About Me

I am a second year economics student from St Aidan’s College, Durham University. Online tutoring is a new experience for me, but I am as keen to learn as I hope you are. I have passion for all things economics and maths related, and jump at the opportunity to share this passion with anyone who shows interest.

Outside of my academic life, I enjoy getting involved in my university community through my roles in the college finance committee, charity group and bar staff, among others. As a Freshers’ Representative for the 2016 Freshers’ Week, I helped new students adjust to life at university by sharing my experience and answering any of their queries. My approachable and patient personality definitely came in handy.

The Tutorials

Very few people enjoy exams, but my aim with these tutorials is to help them seem less daunting. Sometimes all that’s needed is someone to discuss concepts and practice questions with, especially with a subject like economics. In order to get the most out of the 55mins I highly recommend having a particular topic in mind or sample paper that you’d like to go over for each session. That way I can prepare resources in advance and tailor the tutorials to you. I am here to give you as much or as little help as you need.  

Get in touch

Please feel free to send me a message or book a ‘Meet the Tutor Session’ if you’d like to know more about myself or what to expect from the tutorials. Thank you for considering me as your tutor and happy learning!

Subjects offered

SubjectLevelMy prices
Economics A Level £20 /hr
Maths A Level £20 /hr
Maths GCSE £18 /hr

Qualifications

QualificationLevelGrade
Mathematics A-LevelA*
Further MathematicsA-LevelA*
GeographyA-LevelA*
EconomicsA-LevelA
Disclosure and Barring Service

CRB/DBS Standard

No

CRB/DBS Enhanced

No

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Questions Brodie has answered

A circle C with centre at the point (2, –1) passes through the point A at (4, –5).....

(a) Find an equation for the circle C. Before tackling a question like this it is always a good idea to draw a rough sketch of all the information that's given to you.  The general equation of a circle is x2+y2=r2, where r is the radius of the circle.  By using the coordinates given to you f...

(a) Find an equation for the circle C.

Before tackling a question like this it is always a good idea to draw a rough sketch of all the information that's given to you. 

The general equation of a circle is x2+y2=r2, where r is the radius of the circle. 

By using the coordinates given to you for the centre of the circle and the rules of graph transformations you can come to the equation: (x-2)+ (y+1)2 = r2.

You can then use Pythagoras' Theorem to obtain a value for r2. Sketching a small triangle between the two given points can be helpful, with the hypotenuse labelled 'r'. The other lengths of the triangle can be found by subtracting respective x and y coordinates for the centre from the coordinates of point A. Applying Pythagoras' Theorem should give you a value for r2 of 20. 

(b) Find an equation of the tangent to the circle C at the point A, giving your answer in the form ax + by + c = 0, where a, b and c are integers.

There are a few ways of going about this question but one of the simpliest is to recognise that the tangent to point A is perpendicular to the line between A and the centre of the circle. You can easily find the gradient of the line by the following: (-5 - -1) / (4 - 2)= -4 / 2 = -2. The gradient of the tangent is then equal to -1 divided by that value, so 1/2. 

Using the gradient of the tangent and the coordinates for point A you can input them into the general equation of a line, obtaining: (y + 5) = 1/2(x - 4). This can be expanded and rearranged to get an answer of: x - 2y - 14 =0

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3 months ago

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In February 2013, the proposed takeover by Barr of Britvic was referred to the Competition Commission for investigation. There were likely to have been concerns that the takeover would lead to...

(Barr and Britvic are two of the three largest soft drink firms in the UK.) A economies of scale B an increase in consumer surplus C a decrease in contestability D a reduction in external economies of scale E a signal for more firms to enter the industry This is an example of a 4 mark quest...

(Barr and Britvic are two of the three largest soft drink firms in the UK.)

economies of scale

B an increase in consumer surplus

C a decrease in contestability

a reduction in external economies of scale

E a signal for more firms to enter the industry

This is an example of a 4 mark question, where one mark is awarded for the correct multi-choice answer and 3 for further explanation. 

This question covers mergers between firms and competition in the market. The Competition Commission aims to promote competition in the market and protect consumer interest. Therefore, they would want to investigate if there is indication in the market of a reduction in competition. Once you understand this the obvious multi-choice answer would be 'C', as clearly a decrease in contestability would warrant investigation. 

Your explanation would be awarded marks, firstly, for giving any relevant definitions, such as defining contestability (not the same as competitiveness!) or stating the role of the Competition Commission. You should then go on to explain why this merger would reduce contestability and why that would be bad for the consumer i.e. why is the answer C. 

Contestability refers to the barriers of entry in a market. If contestablility has reduced then barriers to entry have increased. Barr and Britvic's larger market share may be allowing them to access cost advantages from economies of scale which acts as a barrier to other firms in the market. This lack of competition allows Barr and Britvic to raise prices, at a cost to the consumer. Therefore, the Commission may want to investigate this merger. 

The above is an example of how you may answer that question. However, even if you weren't sure and chose the wrong option, you could still get 3 marks. With any question involving mergers and the Competition Commission you can pick up quick marks by stating the type of merger (horizontal integration in this case) and the role of the Commission. 'Knock-out' marks can be gained by justifying why one of the options cannot be the correct answer. For example, 'E' would result in an increase of competition in the market, so wouldn't result in investigation. These are usually left till the end of your answer but are very helpful  if you're lost, or want to make sure you've secured full marks.

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3 months ago

104 views
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