Linear graphs

Table for pair of values

In linear equation of two variables, constructing a table of pair of values that satisfy the linear equation can be explained as follows:

1. First of all arrange the linear equation in a way that one variable is on one side and other variable on another side.

   • Let $x+y=5$ can be changed as $y=5-x$

2. Now put random or in order integers in the x to find the value of y an it will give an order pair for the linear equation.

   • Lets put $x=0$ $y=5-(0)$ $y=5$ $(0,5)$ is the order pair.

     

3. Repeat the same process for different values.

   

Plotting the pair of values

Plotting the pair of values of a linear equation is similar to that of the shape plotting points.

1. First choose an appropriate scale for the graph.

   • In this case the largest number in X is 3 and Y is 8.

   • Scale: On X-axis 1 unit= 5 small squares/ On Y-axis 1 unit= 5 small squares.

2. Then plot all the given pairs of the linear equation.

3. Join the points

4. Note: If all the points are not joining by the same linear line it means that the table of pairs contain some errors.