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# OCR MEI - C1 - 13th May 2015 watch

yeah thats what i got as well
Safe AF

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2. (Original post by jpetersgill)
Y=3x-28 for per bisector?

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So did I
3. (Original post by jpetersgill)
Y=3x-28 for per bisector?

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Yup I hope so since I got that and subs x=10 in to get y=2 which is the centre

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4. who is making the unofficial mark scheme and how are you doing so far?
5. (Original post by Liam_27)
who is making the unofficial mark scheme and how are you doing so far?
6. How many marks was the perpencidular bisector question?
7. 5 or 6

i think 6 though
8. (Original post by Kira Yagami)
How many marks was the perpencidular bisector question?
6 marks. It involved working our the grad and midpt that's why

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9. (Original post by jpetersgill)
I got x = (2+sqrt(44))/5

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i got that too
10. (Original post by jpetersgill)
Show the turning point, then state it's a minimum as its a positive parabola

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So would I still get marks for explaining it, opposed algebraicly proving it?
11. I got q12 part i wrong, and I got the completing the square right, but at the end I added 12 instead of taking it away, so I got 3(x+2)^2+25 instead of 3(x+2)^2+1. How many marks do you guys reckon I lost?
12. (Original post by pierre225)
On the earlier question of (25/9)^-1/2 I only put 3/5 instead of + or -
I'll probably lose a mark won't I
crap i put that too, i hope they don't mark it down
13. (Original post by becauseitslaura)
For 12(i) I put 56/12 rather than 14/3, will I lose a mark because I forgot to simplify it?
maybe one, at least you didn't do what I did, I rushed it and got 56/12 to equal five
14. (Original post by Plmoknijbuhv)
(-2, 1) was definitely the minimum point, right? Not (-6, 1)? I took a gamble on that one... What did you all get for 'k' on the last question then?
yeah it was (-2,1)
15. Hi, I'm not sure why, but for the perpindicular bisector, I calculated the Tangent to the circle. I know I just don't see why I did that, that question was so easy :/

Would I get any method marks? Because The tangent was definitely correct as I checked it a few times...
16. (Original post by Kira Yagami)
How man marks was the perpendicular bisection question ? 5 ?
6 marks
17. What did you guys get for the proof question?
18. who is doing an unofficial mark scheme?!
19. (Original post by chemistryislove)
What did you guys get for the proof question?
first one was arrow going right, second one was arrow going left i think
20. I messed up on the 12)i. I used discriminant and did other working so hopefully I'll get 2/5 for that 5 marker.

What was the proof like for u guys? I put arrow going right from square to quadrilateral.

And arrow going left from x integer to x^2? Think I messed up there too but oh well.

Don't know why but I have a feeling I did something silly on like the indices one cos I forgot to check them 😐 overallllll what's done is done.

Hope everyone else had a good exam

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