Inequality tells us about the relative size of two values.
The 4 Inequalities
|>||greater than||x+3 > 2|
|<||less than||7x < 28|
|≥||greater than or equal to||5 ≥ x-1|
|≤||less than or equal to||2y+1 ≤ 7|
There are many inequalities between means. For example, for any positive numbers a1, a2, an we have H ≤ G ≤ A ≤ Q, where
For any two real numbers a and b, exactly one of the following is true.
i. a < b
ii. a = b
iii. a > b
When working with quadratic equations and inequalities in one variable;
Linear Equations and Inequalities in Two Variables: A linear equation in two variables is an equation which may be written in the form Ax + By = C where A, B, and C are real numbers and B is not zero. A linear inequality in two variables x and y is an inequality which can be written as
Ax + By < C,
Ax + By > C.
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