2.4.2 Graph of Functions (II), SPM Paper 1 (Short Questions)

2.4.2 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 = - \frac{3}{x} ?

$y = - \frac{3}{x} ?$

Solution:

y = - \frac{3}{x} or y = - 3 x^{- 1}

$y = - \frac{3}{x} or y = - 3 x^{- 1}$

Highest power of the variable x is –1.

It is a reciprocal function

y = \frac{a}{x}, in this case a = - 3.

$y = \frac{a}{x}, in this case a = - 3.$

The answer is D.