# Section I: Multiple Choice (1 Viewer)

#### pakman_au

##### Member
1.A
2.A
3.A
4.B
4.A
7.C
8.C
9A
10.T
expeCting aBotu 7-8

#### braintic

1. D
2. A
3. C
4. D
5. B
6. B
7. A
8. D
9. C
10. C

Last edited:

##### Member
1.A
2.A
3.A
4.B
4.A
7.C
8.C
9A
10.T
expeCting aBotu 7-8
sorry to say, but you got the first question wrong.

#### Swaan

##### Stupid Fat Hobbit
Anyone know the answer to q10?

#### emilios

##### Well-Known Member
1. D
2. A
3. C
4. D
5. B
6. B
7. A
8. D
9. C
10. C
exact same as mine.

i think these are the correct ones fellas

#### emilios

##### Well-Known Member
Anyone know the answer to q10?
C.

use distance formula on both and set them equal. you get it out with some mild algebra bashing

#### alex4nder

##### Member
5 can't be B as the three roots must multiply for positive 42

#### panakap

##### Member
5 can't be B as the three roots must multiply for positive 42

They have to times for -42, since the product of the roots is -d/a

#### emilios

##### Well-Known Member
5 can't be B as the three roots must multiply for positive 42
product of roots is -d/a thus = -42.

#### alex4nder

##### Member
They have to times for -42, since the product of the roots is -d/a
Oh god... Forgot about factor = (x - the root)
Wow.

#### Swaan

##### Stupid Fat Hobbit
C.

use distance formula on both and set them equal. you get it out with some mild algebra bashing
I left it to the end but ran out of time and guessed C, yassss

#### orcevalm

##### Member
1. D
2. A
3. C
4. D
5. B
6. B
7. A
8. D
9. C
10. C

yea i got pretty much the same except i guessed q10 hhah

#### braintic

##### Well-Known Member
You don't need any serious algebra for Q10.
Assume a>0, b>0, b>a (or the other way round if you like), then draw a diagram.
By symmetry you can see that it must pass through the origin, eliminating B and D.
Then you just need to choose the option with the correct gradient.

#### mreditor16

##### Well-Known Member
You don't need any serious algebra for Q10.
Assume a>0, b>0, b>a (or the other way round if you like), then draw a diagram.
By symmetry you can see that it must pass through the origin, eliminating B and D.
Then you just need to choose the option with the correct gradient.
did this as well

#### rated

##### Member
from the looks of it I got 7/10
D
A
C
D
B
B
B
C
C
B

#### leruns

##### New Member
Not sure how I went...

1) D
2) A
3) C
4) D
5) B
6) B
7) B
8) D
9) C
10) B

1. D
2. A
3. C
4. D
5. B
6. B
7. A
8. D
9. C
10 d