maths

NATIONAL
SENIOR CERTIFICATE
NASIONALE
SENIOR SERTIFIKAAT

GRADE/GRAAD 12

MATHEMATICS P3/WISKUNDE V3
NOVEMBER 2013
MEMORANDUM
MARKS/PUNTE: 100

This memorandum consists of 14 pages.
Hierdie memorandum bestaan uit 14 bladsye.

Copyright reserved/Kopiereg voorbehou

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Mathematics P3/Wiskunde V3

2
NSC/NSS – Memorandum

DBE/November 2013

NOTE:
• If a candidate answered a question TWICE, mark only the first attempt.
• If a candidate crossed out an attempt of a question and did not redo the question, mark the crossed-out question.
• Consistent accuracy applies in ALL aspects of the marking memorandum.
LET WEL:
• As 'n kandidaat 'n vraag TWEE keer beantwoord het, merk slegs die eerste poging.
• As 'n kandidaat 'n antwoord deurgehaal en nie oorgedoen het nie, merk die deurgehaalde antwoord. • Volgehoue akkuraatheid is DEURGAANS in ALLE aspekte van die memorandum van toepassing.
QUESTION/VRAAG 1
Calories
Total fat (in grams)
1.1

270
14

310
12

340
25

360
21

440
28

450
24

580
32

620
43

Scatter Plot showing number of calories versus total fat sandwiches (in

45
40

Total Fat (in grams) /Totale vetinhoud
(in gram)

35
30
25
20
15
10

NOTE:
• The English and Afrikaans diagrams are different in size
• The point (300 ; 34) is from 1.4. Do not penalise for this point in question 1.1.
• The learner may have other points due to trying to draw the least squares regression line
Copyright reserved/Kopiereg voorbehou

 all 8 points plotted correctly
2 marks for 5 – 7 points plotted correctly 1 mark for 2 – 4 points plotted correctly No marks for 1 point or less plotted correctly. (3)
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Mathematics P3/Wiskunde V3

1.2 a = – 5,62 (– 5,62181859...) b = 0,07 (0,072396008...)
ˆ
y = −5,62 + 0,07 x

3
NSC/NSS – Memorandum

NOTE:
Penalty 1 for rounding in question 1.2.

1.3 Drawn on the scatter