Is my AS level Demand Curve question correct?

I just need someone to check my answers please..

Question 2

_____________________________________
Quantity demanded ......... Price
(million tyres) ..................(£)
_____________________________________
10 ................................ 20
20 ................................ 16
30 ................................ 12
40 ................................ 8
50 ................................ 4
_____________________________________

This table shows the demand curve facing a tyre manufacturer.

a) Draw a demand curve for tyres from the above data.

b) An increase in income results in an increase in quantity demanded tyres of: (i) 5 million; (ii) 10 million; (iii) 15 million; (iv) 25 million. For each of these, draw a new demand curve on your diagram.

c) Draw a demand curve for tyres which would show the effect of a fall in incomes on the original demand for tyres.

d) Draw a demand curve for tyres which would show that no products were demanded when their price was £8.

(My answer is below)

Question2.jpg84.3KB

Reply 1

Multiplexed

That looks about right, not sure about c) as it depends on the elasticity of the product.

I'v never ever done my demand curves with numbers so that was the first i seen, haha.