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# Questions

## Find the perfect question by filtering through every previous QCAA General Mathematics external exam question

QUESTION 1 Four linear models have been developed for a data set. Identify the residual plot that indicates that the developed linear model is justified. (A) (B) ©) (D)

QUESTION 2 The standard Australian time zones are shown on the map. : GMT 9.5 All states and territories except Western Australia (WA) Queensland (QLD) and the Northern Territory (NT) have daylight saving in summer. Daylight saving time is 1 hour ahead of standard time. When it is 10:00 am daylight saving time in New South Wales (NSW) it is (A) 9:30 am in South Australia (SA) and 9:00 am in QLD. (B) 9:30 am in SA and 11:00 am in QLD. (C) 10:30 am in SA and 9:00 am in QLD. (D) 10:30 am in SA and 11:00 am in QLD.

QUESTION 3 For the sequence 4 2 0 —2 —4 ... the common difference is (A) 4 B) 2 C) =2 (D) -4

QUESTION 4 Which of the following graphs could be modelled using a geometric sequence? (A) © 30 25 20 t 15 10 5 - - (B) (D) 30 25 20 t 15 10 5 0 30 25 20 {15 10 - o 1 2 3 4 5 6

QUESTION 5 Determine the equation of the least-squares line where » =0.926 x =5.2 s = 2.3 y = 68.6 and s =41.7. (A) y=16.79x—-1146.51 (B) y=16.79x-18.70 (C) y=0.05x+68.33 (D) y=0.05x+1.70

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