NCERT Solutions For Class 8 Maths Chapter – 15 Introduction to graphs Exercise – 15.3
Q1. Draw the graphs for the following tables of values with suitable scales on the axes.
- Cost of apples
- Distance travelled by a car.
(i) How much distance did the car cover during the period 7:30 A.M. to 8:00 A.M. ?
- 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.
- Does the graph pass through the origin ?
- Use the graph to find the interest on Rs 2500 for a year.
- To get an interested of Rs 280 per year, how much money should be deposited ?
Solution:-
Mark “ number of apples” on x- axis and “cost” on y – axis . The graph is
( b ) Represent the “time” on x – axis and “distance on y- axis.
- The car covered 20 km distance
- It was 7:30 A.M. when it covered 100 km distance.
- Represent “Deposit” on y – axis and simple “interest” on x- axis.
( c ) Represent “Deposit” on y- axis and “simple interest” on x -axis.
- Yes, the graph passes through the origin.
- Interest on Rs. 2500 is Rs. 200 for a year.
- 3500 should be deposited for interest of Rs. 280.
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Q2. Draw a graph for the following
Solution:-
- Yes, it is linear graph.
- No, it is not a linear graph because the graph does not provide a straight line.
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