R d sharma solutions mathematics class 8 Solutions for Chapter 27 introduction to graphs

Exercises in Chapter 27 introduction to graphs Grade 8

Introduction To Graphs Exercise 27.1

Introduction To Graphs Exercise 27.2

Questions in Introduction To Graphs Exercise 27.1

Plot the points (5, 0), (5, 1), (5, 8). Do they lie on a line? What is your observation?

Plot the points (2, 8), (7, 8) and (12, 8). Join these points in pairs. Do they lie on a line? What do you observe?

Locate the points :

(i) (1, 1), (1, 2), (1, 3), (1, 4)

(ii) (2, 1), (2, 2), (2, 3), (2, 4)

(iii) (1, 3), (2, 3), (3, 3), (4, 3)

(iv) (1, 4), (2, 4), (3, 4), (4, 4,)

Find the coordinates of points A, B, C, D in Fig.

Find the coordinates of points P, Q, R and S in Fig.

Write the coordinates of each of the vertices of each polygon in Fig.

Decide which of the following statements is true and which is false. Give reasons for your answer.

(i) A point whose x-coordinate is zero, will lie on the y-axis.

(ii) A point whose y-coordinate is zero, will lie on x-axis.

(iii) The coordinates of the origin are (0, 0).

(iv) Points whose x and y coordinates are equal, lie on a line passing through the origin.

Questions in Introduction To Graphs Exercise 27.2

The following table shows the number of patients discharged from a hospital with HIV diagnosis in different years:

Represent the information by a graph.

The following table shows the amount of rice grown by a farmer in different years:

Plot a graph to illustrate this information.

The following table gives the information regarding the number of persons employed to a piece of work and time taken to complete the work:

Plot the graph of this information.

The following table gives the information regarding length of a side of a square and its area

Draw a graph to illustrate this information.

The following table shows the sales of a commodity during the years 2000 to 2006.

Draw a graph of this information.

Draw the temperature-time graph in each of the following cases:

Draw the velocity-time graph from the following data:

The runs scored by a cricket team in first 15 overs are given below:

Draw the graph representing the above data in two different ways as a graph and as a bar chart.

The runs scored by two teams A and B in first 10 overs are given below:

Draw a graph depicting the data, making the graphs on the same axes in each case in two different ways as a graph and as a bar chart.

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Chapters in this book

Rational Numbers

Squares and Square Roots

Cube and Cube Roots

Playing with Numbers

Algebraic Expressions and Identities

Division of Algebraic Expressions

Linear Equation in One Variable

Direct and Inverse Variations

Profit Loss Discount and Value Added Tax

Compound Interest

Understanding Shapes Polygons

Understanding Shapes Quadrilaterals

Understanding Shapes Special Types Quadrilaterals

Practical Goemetry

Visualising Shapes

Area of Trapezium and Polygon

Volume Surface Area Cuboid Cube

Surface Area and Volume of Right Circular Cylinder

Classification And Tabulation Of Data

Classification And Tabulation Of Data Graphical Representation Of Data As Histograms

Pictorial Representation Of Data As Pie Charts Or Circle Graphs

Data Handling Probability

Introduction To Graphs

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