Worksheet solutions for chapter: Introduction to Graphs for class 8 are provided below.
(1) Draw the graph with given data.
| Time | Week 1 | Week 2 | Week 3 | Week 4 |
| Performance in math (%) | 65 | 70 | 75 | 85 |
Ans-
The graph is presented below:-
(2) Show the coordinates (0,7) and (7,0) on graph.
Ans-
The required coordinates are presented below:-
(3)Find the coordinates of given points with the help of graph.
.
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Coordinates of point A (4, 3)
Coordinates of point B (2, 3)
Coordinates of point C (2, 6)
Coordinates of point D (4, 7)
(4) Draw the graph for the following values.
| Number of copies | 2 | 4 | 6 | 8 |
| Cost (Rs) | 20 | 40 | 60 | 70 |
(i) What is the cost of 5 copies?
(ii) Is it a linear graph?
Ans-
(i) The cost of 5 copies is Rs 50.
(ii) Yes, it is a linear graph.
(5) Find the answers of questions from the given graph.
(i) distance covered in 3.5 hour.
(ii) Is graph pass from the origin?
Ans-
(i)Distance covered in 3.5 hour is 105 km.
(ii) No, graph does not pass through origin.
(6) In coordinate(4, 5), 4 is a
(i) x – coordinate
(ii) y – coordinate
Ans-
4 is a x – coordinate.
(7) The graph which displays data that changes continuously over period of time and points represented particular data is joined by a straight line is
(i) bar graph
(ii) line graph
Ans-
(ii) Line graph
(8)Draw speed – time line graph by given data.
| Distance (km) | 50 | 100 | 150 | 200 |
| Time (hour) | 1 | 2 | 3 | 4 |
Use graph to find speed in 2.5 hours?
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(9) Point A is placed on graph. Find, if coordinates of the point A is (3, 4).
Support your answer with reason.
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Coordinates of point A are (3, 4) because when we move 3 units on x axis and move up 4 units from there, we get point A.
(10) Fill in the blanks:-
(i) A ____ graph is used to compare parts of a whole.
(ii) ____ and ____ coordinates are necessary to fix a point on the graph.
(iii) A _____ is a bar graph that shows data in intervals
Ans-
(i) A pie graph is used to compare parts of a whole.
(ii) x and y coordinates are necessary to fix a point on the graph.
(iii) A histogram is a bar graph that shows data in intervals.
Helping Topics