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| Algebraic Equations and Inequalities |
 Properties of Equations and Inequalities Graphical Interpretation of Solutions
Linear Equations Linear Inequalities
Linear Equations Involving Absolute Value Linear Equations Involving a Few Absolute Values Linear Inequalities Involving Absolute Value
 Quadratic
EquationsQuadratic Equations and Quadratic Functions Extreme Value of Quadratic Function Quadratic Formula Solving Quadratic Equations by Factoring Quadratic
Inequalities |
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The simplest algebraic equation is a linear equation, k x + b = 0, where x is the variable; k and b are constants (k ≠ 0). A graph of a linear function, y = k x + b = 0 (k ≠ 0), is a straight line with the only one x-intercept, x = – b / a.
So a linear equation has a single solution,
In mathematical literature, the equation k x + b = 0 is known as an equation of a line in slope-intercept form, since b is the y-intercept, and k is the slope of the line.
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