A linear equation in one variable can be solved very easily. This equation has a degree that is always equal to 1. It is the easiest way to represent a mathematical statement. It is of the form Ax + B = 0, where A and B are any two real numbers and x is an unknown variable that has only one solution. This is how a linear equation is represented on a graph.Ī linear equation in one variable is an equation in which there is only one variable present. Step 6: Finally, we plot these points (4,1), (2,0), (0,-1) and (-2, -2) on a graph and join the points to get a straight line.Therefore, we list the coordinates as shown in the following table. Now, these pairs of values of (x, y) satisfy the given linear equation y = x/2 - 1. The value of x = -2 gives the value of y = -2. Step 5: If we substitute the value of x as 4, we get y = 1.Similarly, if we substitute the value of x as 2 in the equation, y = x/2 - 1, we get y = 0. Step 4: When we put x = 0 in the equation, we get y = 0/2 - 1, i.e.Step 3: Now, we can replace the value of x for different numbers and get the resulting value of y to create the coordinates.Step 2: Convert the equation in the form of y = mx + b.Step 1: The given linear equation is x - 2y = 2.Let us plot the linear equation graph using the following steps. Let us graph a linear equation in two variables with the help of the following example.Įxample: Plot a graph for a linear equation in two variables, x - 2y = 2.
The graph of a linear equation in one variable x forms a vertical line that is parallel to the y-axis and vice-versa, whereas, the graph of a linear equation in two variables x and y forms a straight line.
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