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Mr M's Edexcel GCSE Linear 1MA0 Higher Tier Paper 2 Answers June 2013

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    Mr M's Edexcel GCSE Linear 1MA0 Higher Tier Paper 2 Answers June 2013


    1. Surface area

    40.5 (3 marks)


    2. Mince pies

    Elaine doesn’t have enough mincemeat (4 marks)


    3. Scatter graph

    a) Plot points (1 mark)

    b) As the age increases, the value of the car decreases OR negative correlation (1 mark)

    c) £6200 (or an answer near this) (2 marks)


    4. Probability game

    126 (3 marks)


    5. Questionnaire

    a) Any two of overlapping boxes, no time period, no box for more than 12 (2 marks)

    b) Question with time period , no overlapping boxes and a full range of choices (2 marks)

    c) His friends are all of a similar age and will not give him a representative sample of the population (1 mark)


    6. Yoghurt machine

    4.8 seconds (4 marks)


    7. Sharing money

    \frac{7}{25} (4 marks)


    8. Playground tarmac

    £10752 (4 marks)


    9. Angles

    Angle RQD is 35 degrees (corresponding angles are equal)

    Angle x is 55 degrees (angles on a straight line add up to 180 degrees) (4 marks)


    10. Trial and improvement

    4.7 (4 marks)


    11. Pythagoras’ Theorem

    3.52 (3 marks)


    12. Solving equations

    a) x = 6.5 (3 marks)

    b) y = -3 (2 marks)


    13. Midpoint and gradient

    a) (3, 3.5) (2 marks)

    b) -1.8 (2 marks)


    14. Banks

    Viv should invest with Friendly Bank as she will earn an extra £9.70 (4 marks)


    15. Quadratic graph

    a) Missing values: 8, -1, 0, 8 (2 marks)

    b) Graph of parabola (2 marks)

    c) x = -1 or x = 3 (2 marks)


    16. Angles in a circle

    Angle OTP = 90 degrees (radius and tangent are perpendicular)

    Angle OTS = angle OST (isosceles triangle)

    x = 29 degrees (angles in a triangle add up to 180 degrees) (5 marks)


    17. Box plots

    a) Correct box plot (2 marks)

    b) The boys’ median is greater than the girls’ median (£32 compared to £25)

    The boys’ interquartile range is smaller than the girls’ interquartile range (£22 compared to £26) (2 marks)


    18. Changing the subject of a formula

    p=\pm \sqrt{\frac{y+4}{3}} (don’t worry if you didn’t include the plus or minus sign) (3 marks)


    19. Factorising

    a) 3(2+3x) (1 mark)

    b) (y+4)(y-4) (1 mark)

    c) (2p-5)(p+2) (2 marks)


    20. Ladder

    The angle is 68 degrees so it needs to be a bit larger before the ladder is safe (3 marks)


    21. Stratified sample

    49 (2 marks)


    22. Inverse proportion

    \frac{85}{64} (3 marks)


    23. Upper and lower bounds

    3.186915888 and 3.110091743 (rounded answers are acceptable so long as they show several decimal places) (4 marks)


    24. Scalene triangle

    a) 18.2 (2 marks)

    b) 6.56 (3 marks)


    25. Simultaneous equations

    x = 2.87 and y = -0.87

    x = -0.87 and y = 2.87 (6 marks)
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    Hope everyone gets what they expected, and the last question simultaneous equation + quadratic equation in one was a-level maths!
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    Good luck guys


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    (Original post by Wajaad)
    Hope everyone gets what they expected, and the last question simultaneous equation + quadratic equation in one was a-level maths!
    It really wasn't. Substitution is part of the gcse syllabus. I think answers were when x=2.87, y=-0.87, and when x=-0.87, y=2.87


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    (Original post by Wajaad)
    Hope everyone gets what they expected, and the last question simultaneous equation + quadratic equation in one was a-level maths!
    What?
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    (Original post by ahmed15)
    It really wasn't. Substitution is part of the gcse syllabus. I think answers were when x=2.87, y=-0.87, and when x=-0.87, y=2.87


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    That should be correct I think!! Seemed to be what people got


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    Good Luck Everyone , I hope I get the A*
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    I probably made so many stupid mistakes, even though after non-calculator I thought "alright Dylan, no more stupid mistakes"

    edit: Yeah, I made many mistakes.
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    Roughly how much out of 200 is a c grade? Any estimate will do not the brightest mathematician ever I'm afraid :/
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    around 75
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    Roughly how much out of 200 is an A*. Judging by the fact that this paper was very easy though.
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    Predictions for an A*?
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    (Original post by danfox12)
    Roughly how much out of 200 is a c grade? Any estimate will do not the brightest mathematician ever I'm afraid :/
    60/200 (on a higher paper)
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    (Original post by danfox12)
    Roughly how much out of 200 is a c grade? Any estimate will do not the brightest mathematician ever I'm afraid :/
    I think for this year 130 will be A and 100 will be a B so over 65 should be a C to be honest taking into consideration the difficulty of some questions
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    165 for an A*
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    Screwed the last one badly. Found the rest of the exam pretty easy though. Hopefully no silly mistakes.
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    (Original post by ahmed15)
    It really wasn't. Substitution is part of the gcse syllabus. I think answers were when x=2.87, y=-0.87, and when x=-0.87, y=2.87


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    I got that too!
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    right then, feeling confident ATM. Good luck everyone
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    could anyone please answer this?
    if i put 2.87 and -0.87 and vice versa (the correct answer) but with no working out (i used trial and error), is that full marks regardless?

    cheers, and top work Mr M
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    Does anyone have a link to the actual paper with answers instead of just answers. Thanks
Updated: December 31, 2013
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