Linear Equation: an equation whose graph forms a line. Linear means of a line. So a linear equation is the equation of a line. In linear equations, all variables are taken to the first power. is linear. is not. Why?
Suppose you were asked to graph the solution set of the linear equation, You could start by creating a table of values.
. . . and substitute the number for the variable. Then calculate to find,
With your table completed for three sets of values, you are ready to graph the line.
If they do line up, you just need to connect the dots. If the three points do not line up, you need to find your mistake.
Create a table of values for each equation, and graph it on grid paper: 1. 2. 3. 4.