Question

Fixed payment for 152 words is ₹25. From the given data the rate of change will be ₹ /extra words.

• A. 2
• B. 3
• C. 4
• D. 6

Answer 1

The correct option is B 3

Here it is given that,
Initial value for 152 words $=₹25$
$=2500paise$


You know,
$\text{Rate of change = slope =}\frac{Changeiny}{Changeinx}$

Consider the points (162, 31) and (178, 79).

By putting the values from graph, you get:
$\text{Slope =}\frac{79-31}{178-162}$
$=\frac{48}{16}$
$=3$

∴ The rate of change is ₹3/extra word.