Question

Draw the graphs for the following tables of values, with suitable scales on the axes.

(a) Cost of apples

Number of apples	1	2	3	4	5
Cost (in Rs.)	5	10	15	20	25

(b) Distance travelled by a car

Time (in hours)	6am	7am	8am	9am
Distance (in km)	40	80	120	160

(i) How much distance did the car cover during the period $7.30$ a.m. to $8$ a.m?
(ii) What was the time when the car had covered a distance of $100$ km since it's start?

(c) Interest on deposits for a year.

Deposit (in Rs.)	1000	2000	3000	4000	5000
Simple Interest (in Rs.)	80	160	240	320	400

(i) Does the graph pass through the origin?
(ii) Use the graph to find the interest on $Rs.2500$ for a year.
(iii) To get an interest of $Rs.280$ per year, how much money should be deposited?

Answer 1

b) i) $20$ km

ii) $7.30$ am

c) i) The graph is linear and it passes through the origin.

ii) Interest on Rs. $2500$ is Rs. $200$.

iii) To get an interest of Rs. $280$ per year, she must deposit Rs. $3500$.