Suggested Answers (and Discussion) of the Further Maths Exam!

[EdwinJS]

Ah. I've always known that if you are still owed money, FV should be positive. If you now owe money, FV should be negative. In this case your original amount still owed (PV) is negative so you are stilled owed $130,784.83 but if you have FV as negative, you now owe $66,992.27 since you have overpaid.

Very true, guess I'll have to wait to see the end result/score 

the first step is to find k using the fact that it took her 10 mins to walk 800 metres so 10k=800 making k 80 and then from there you use 80a=600 (as line 2 and 3 must be equal where they meet) and find a as 7.5

But that's assuming she was the same speed for the entire 10minutes... Think about it this way, similar to what you said the first 6minutes she travelled 600m therefore 6k = 600 and k=100 which we are already told. Then there is 4minutes left to travel and 400meters remaining, we aren't told how long she is stationary, and we aren't told her speed afterwards. So couldn't any answer be justified?

[masch]

For Q24 PV is NEGATIVE (money out of your pocket) and FV is POSITIVE (money owed to you)

[Youssab]

Can someone please explain 8 core, and i am pretty sure 24 is E, and 8 matrices is A...

[ryunee]

Does anyone know how to work out Linear (not Core sorry!) Q6 - there were two unknowns so I had no idea how to get the equation. I ended up guessing another point on the graph and using power regression on CAS to get the rule. Chose E but I have no clue how

[Syedali_]

Does anyone know how to work out Core Q6 - there were two unknowns so I had no idea how to get the equation. I ended up guessing another point on the graph and using power regression on CAS to get the rule. Chose E but I have no clue how

Core Q6 is histogram , are you sure it the right question?

[kirstym1204]

Is someone able to explain the last question in the geometry and measurement module? The question with the triangle flags on the string.

[stuof2016]

Hey everyone!

The answers that are below are purely provisional - point out the mistakes! If you did a module we don't have please post it! We also have a A Copy of the 2016 VCE Further Maths Exam 1

When we have consensus on a module we'll note it down in this original thread. Let's get some teamwork going!

(If someone has a copy of the exam, that would be great too - personal message me if you have one!)

Core

Spoiler

1. B
2. B - challenge has been made; is it D or B? Give us your reasoning.
3. A
4. E
5. C
6. D
7. E
8. C
9. C
10. B
11. A
12. D
13. C
14. A
15. E
16. D
17. E
18. C
19. A
20. D
21. B
22. B
23. D
24. C challenge has been made; is it C or E? Give us your reasoning.

Matrices

Spoiler

1. C
2. D
3. E
4. B
5. C
6. B
7. D
8. A Some people are challenging this answer, claiming answer E instead.

Networks

Spoiler

1. B
2. C
3. C
4. E
5. A
6. C
7. B
8. B

Graphs and Relations

Spoiler

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

Geometry

Spoiler

1. A
2. D
3. E
4. A (not 100%, what's your answer?)
5. A
6. E
7. C
8. D (not 100%, what's your answer?)

Hey guys regarding question 2 on the core, I am pretty sure it is D because I made some research and according to this website:
https://onlinecourses.science.psu.edu/stat504/?q=book/export/html/1

'under 50 or above 50' is nominal:
(see image)
All the best

[Bobzbeme]

Alright i just want some clarification on some answers.

Core:
Q9: Clarification
Q13: why can't it be D, isnt it increasing after the fluctuations?
Q21: Shouldn't it be D if its $80000, with $4000 per year? Unless i misunderstood it

Thats all, be kind 

[Shax]

Hey guys,
Can someone please explain question 5 in graphs and relations ?
How do we know that it is C ? Personally, I chose E because I was confused between B and C.
The objective function has 4 variables and its maximum value cannot be simply determined by inspection. I think the graph was not to scale and the two lines were meant to be parallel. But even if they were not, why not B ?

[masch]

Core Question 24 : Answer is DEFINITELY C . Just checked it using recursion

[deejay9]

Alright i just want some clarification on some answers.

Core:
Q9: Clarification
Q13: why can't it be D, isnt it increasing after the fluctuations?
Q21: Shouldn't it be D if its $80000, with $4000 per year? Unless i misunderstood it

Thats all, be kind 

Q9 - A is true (take the square root of the r squared value), B is true (notice it says variation NOT explained, therefore 100-87.5 = 12.5), C is false, D is true (you can tell that it's strong, positive and linear just by looking at the scatterplott) and E is true (75 uses interpolation as it's inside the original range of HDI values)
Q13 - There isn't a significant enough change to say that the trend is increasing, therefore there's no overall trend and the answer is C
Q21 - The value of a perpetuity always remains the same (think of the word perpetual meaning forever), so the graph is just a horizontal line

[arney16]

Question 4 in Geometry I got as E.
If the sun rises in Mallacoota, which is further East than Portland, the sun should rise first in Mallacoota, because the places in the east see the sun first!!
Is this correct?   

[maddymerz]

Reading through this thread sounds like question 24 from Core is leaning towards C, still a bit of a debate though. I went E - anyone have a clear/close to definite answer??

[mb]

Reading through this thread sounds like question 24 from Core is leaning towards C, still a bit of a debate though. I went E - anyone have a clear/close to definite answer??

Definitely C, go try it yourself, the initial balance is $180,000

[stuof2016]

Reading through this thread sounds like question 24 from Core is leaning towards C, still a bit of a debate though. I went E - anyone have a clear/close to definite answer??

Q24
Finance solver:
Make PV = -130784.93
PMT= ?
FV= 66992.27
N= (120-60 = 60) = 60  (pretend the 5 yr value is initial)
ppy=cpy=12
I= 5.2
you will get 1500 (C)