Linear Equations: The general form of a linear equation is ax + by + c =0 where a, b, c are constants and . A linear equation may contain one variable or two variables
Example: Solve for x: 6x-18 = 0Adding ‘18’ on both sides gives
6x = 18. x=18/6 x = 3.Graphs: The graph of a linear equation is always a straight line
Linear Inequalities: Linear inequalities are similar to linear equations except for few differences.
Example: Solve 2x – 8 < 4 and graph the solution set on number line.
Graphs: The graph of a linear inequality is a straight line with open or closed half planes.
Graph y < x – 2 Graph y < x – 2
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