2.4.2 SPM Practice (Short Questions)
Question 3:
Which of the following graphs represent y = 2x3 – 16?
![](http://spmmathematics.blog.onlinetuition.com.my/wp-content/uploads/sites/5/2016/04/Picture32-1.png)
![](http://spmmathematics.blog.onlinetuition.com.my/wp-content/uploads/sites/5/2016/04/Picture33-1.png)
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
![](http://spmmathematics.blog.onlinetuition.com.my/wp-content/uploads/sites/5/2016/04/Picture34-1.png)
![](http://spmmathematics.blog.onlinetuition.com.my/wp-content/uploads/sites/5/2016/04/Picture35-1.png)
Solution:
Highest power of the variable x is –1.
It is a reciprocal function
The answer is D.