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Mr M’s Edexcel GCSE Mathematics A Higher Linear Paper 1 Answers June 2012

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Original post by Mr M
Mr M’s Edexcel GCSE Mathematics A Higher Linear Paper 1 Answers June 2011


1. Questionnaire

a) Suitable table (2 marks)

b) Sample too small OR not representative (1 mark)


2. Paving slabs

a) Yes (he needs 30 slabs) (3 marks)

b) £276.16 (3 marks)


3. Parcels

a) £10 (1 mark)

b) Ed is cheaper than Bill for distances under 20 miles and more expensive for distances over 20 miles. The cost is the same for a distance of 20 miles. (3 marks)


4. Stem and leaf diagram

2 | 9
3 | 1 3 5 6 9
4 | 2 3 3 4 6 8 9
5 | 2 4 5

Key: 2 | 9 = 29 mph (3 marks)


5. Medicine

8 (2 marks)


6. Shortcakes

a) 30 (2 marks)

b) 60 (2 marks)


7. Buses

11.00 a.m. (3 marks)


8. Algebra

a) 6y156y-15 (1 mark)

b) 4x(2x+y)4x(2x+y) (2 marks)

c) h=10tgh=\frac{10t}{g} (2 marks)


9. Rotation

Rotation 180 degrees about (3, 3) (3 marks)


10. Train tickets

Railtickets (65p cheaper) (4 marks)


11. Parallelogram

39 (3 marks)


12. Orange juice

4 (3 marks)


13. Hexagon and octagon

105 degrees (4 marks)


14. Lighthouse and harbour

a) 35 km (1 mark)

b) 110 degrees (1 mark)

c) Position marked 4 cm away on correct bearing (2 marks)


15. Cumulative frequency

a) 170 g (1 mark)

b) Correct box plot (3 marks)

c) Median of group A is higher than that of group B and interquartile range of A is bigger than B or other correct comparisons (2 marks)


16. More algebra

a) m10m^{-10} (1 mark)

b) (x+5)(x2)(x+5)(x-2) (2 marks)


17. Standard form

a) 1 (1 mark)

b) 0.000067 (1 mark)

c) 2.7×10142.7 \times 10^{14} (2 marks)


18. Area of enlarged shape

1.5 (3 marks)


19. Probability tree diagram

a) Missing numbers: 0.6, 0.7, 0.3, 0.7 (2 marks)

b) 0.12 (2 marks)


20. Simultaneous equations

x = 3 and y = -2 (4 marks)


21. Circle theorems

Radius and tangent are perpendicular so angles OBA and ODA are 90 degrees

Angles in a quadrilateral sum to 360 degrees so angles DOB = 130 degrees

Angle BCD = 65 degrees as angle at circumference is half the angle at the centre of the circle (4 marks)


22. Histogram

a) Correct bars (frequency densities 3, 5, 3.6, 1.2) (3 marks)

b) 18 (2 marks)


23. Algebraic fractions

a) x+42x3\frac{x+4}{2x-3} (3 marks)

b) 7x2x24\frac{7x-2}{x^2-4} (3 marks)


24. Recurring decimal

31110\frac{31}{110} (3 marks)


25. Cylinder and sphere

r = 3x (3 marks)


26. Graph transformations

a) Translation 3 units in the positive x direction (2 marks)

b) Stretch scale factor 2 in the y direction (2 marks)

hello Mr M, do you have the calculator version of this paper?
Original post by tayyabkhan786
hello Mr M, do you have the calculator version of this paper?


There is a thread for it. You will just need to search.
Is there a ms for the march 2012 calculator paper please?
Original post by vet_hopeful!_worried
Is there a ms for the march 2012 calculator paper please?


yes u can download the ms from the edexcel website..
Reply 465
Is their an un-official markscheme any-where on the internet where i can view the workings out?
where do you get the paper from
Original post by Mr M
There is a thread for it. You will just need to search.


where can you find the calculator paper

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