2.4 SPM Practice (Short Questions)


2.4 SPM Practice (Short Questions)
 
Question 3:
Which of the following graphs represent y = 2x3– 16?
 
Solution:
y = 2x3 – 16
On the y-axis, x = 0.
y = 2(0)3 – 16
y = –16
 
The answer is C.


Question 4:
Which of the following graphs represent y = 3 x ?



 
 
Solution:
y = 3 x or y = 3 x 1
Highest power of the variable x is –1.
It is a reciprocal function y = a x , in this case a = 3.
The answer is D.

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