So far, all the equations that we have come across are linear in type. The most common difference between the two types of equations is as follows:
We have learned some techniques to solve linear equations. Solutions to non-linear equations are also possible, but they are comparatively difficult and more involved.
Next we discuss a few interesting things about equations. Kids your age might wonder as to how they can draw:
on a piece of paper. We learn some easy ways to graph a linear equation in one or two variables.
Graphing an equation requires a co-ordinate plane. It consists of two straight lines one in horizontal direction and the other in the vertical direction. The horizontal line is referred to as x-axis and the vertical line is called y-axis. The point where the two lines intersect is called origin.
A simple coordinate plane has been shown below.
There exist infinitely many points on the coordinate plane. A single point can be specified with the help of two co-ordinate values x and y, and is represented in the form of an ordered pair (x,y). Here x and y can take any real value.
In order to graph a linear equation in one variable, we make use of a coordinate plane Let us present it through an example.