Question

The relation between the working time(t) and the income (c in dollars) of a person is given in the graph. The function that relates these is

• A. t = 5 $\times$ c
• B. c = 5 $\times$ t
• C. t = 20 $\times$ c

Answer 1

The correct option is B c = 5 $\times$ t

The given graph shows the relation between the working time and the income.

Let c be the income and t be the time.

From the graph, when t = 4, c = 20 dollars

Therefore, income for 1 hour = $\frac{20}{4}$ = 5

= 5 dollars

Hence, the required function is c = 5$\times$t.