Solution to Summative Assessment 5 from accompany text book NCV 2 Mathematical Literacy Hands-On Training published by Future Managers Pty Ltd (www.futuremanagers.net)

1. Mathematical Literacy 2
Module 5
Answers to Assessment Questions
Mathematical Literacy Future Managers 1

2. Self Assessment
1. State whether the following tables show a
direct or an indirect relationship:
Age of baby = 650 (weight of baby) + 3200
Age 0 1 2 3 4
Weight 3200 3850 4500 5150 5800
Direct
No of bricks 1000 2000 5000 7000 11000
Cost of bricks 3000
Direct
Mathematical Literacy Future Managers 2

3. 1. State whether the following tables show a
direct or an indirect relationship:
Age of baby = 650 (weight of baby) + 3200
Amount (R) 1 10 100 1000 6500
Value in £
Direct
Price of Car (R) 500000 250000 100000 25000
Cars sold 5 10 25 100
Indirect
Mathematical Literacy Future Managers 3

4. Summative Assessment
1. Complete the following tables according to the
given formula’s or written instructions.
y = 5x- 2
x 1 2 3 4 5 6 7 8 9
y 3 8 13 18 23 28 33 38 43
Take in input, multiply it by 5 and subtract 7
Mathematical Literacy Future Managers 4

5. Complete the operating instructions, give the
correct formula and then complete the tables:
Divide the x-value by ______ and the add 8
5 _____ to
the answer
Formula _________________
y= x + 8
/5
x 5 15 25 35 45 55 65 75 85
y 9 11 13 15 17 19 21 23 25
Mathematical Literacy Future Managers 5

6. 1. Investigate the following situations and decide
on one or two good ways to represent the
information.
a. Average percentage of a student through the year:
Feb: 45%; Mar: 50%; Apr: 67%; May: 82%; Jun:
56%; Aug: 60%; Sept: 75%
Line graph
Bar graph
Mathematical Literacy Future Managers 6

7. 1. Investigate the following situations and decide
on one or two good ways to represent the
information.
a. Article: AIDS affects 5,2 million South African’s.
“The actuarial society’s latest figures come from its
new AIDS demographic model ASSA 2003. It
shows there were around 530 000 new HIV
infections between mid-2004 and mid-2005 and
about 340 000 AIDS deaths during the same
period. The society’s models predicts that 5,8
million South African’s will be infected with HIV
by 2010”
Line graph
Mathematical Literacy Future Managers 7