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The point P has coordinates (3,4), Q has the coordinates (a,b), a line perpendicular to PQ is given by the equation 3x+2y=7. Find an expression for b in terms of a

Firstly, let's have a look through the question to find the key words and write down any equations you might need. Perpendicular means the two lines cross and meet at a right angle, we also have an equation ...
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Answered by Charles B. • Maths tutor
6965 Views

What is the difference between public goods and externalities?

Public goods are non-excludable and non-rival - i.e. you cannot be stopped from consuming the good and this does not affect others' consumption Externalities are benefits/costs to a third party outside the m...
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3103 Views

What are the patterns of global urbanisation?

Developed countries: more urbanised - 80% of USA population in 2%Developing: growing at a faster rate - Rwanda fastest urbanisation rate in the world: 9% Leading to problems with waste management, resource c...
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2280 Views

How should you start your introduction for your PS?

This can be done in many ways. This was mine: During my visit to South Africa two years ago I was struck by the economic divide between neighbourhoods. Adjacent to luxurious gated communities lay areas of de...
NS
2715 Views

How can I best prepare for interview?

Read your personal statementLook online at student room past questionsUse YouTube to get a feel of the experienceShow what you're thinking Research who is going to be interviewing you, see what their interes...
NS
1974 Views