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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?

Solution:

b) i) 20km
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.