Inequalities tend to have infinitely many solutions.
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A solution to a linear inequality in two variables is an ordered pair (x, y) that makes the inequality a true statement. The solution set is the set of all solutions to the inequality. The solution set to an inequality in two variables is typically a region in the xy-plane, which means that there are infinitely many solutions. Sometimes a solution set must satisfy two inequalities in a system of linear inequalities in two variables. If it does not satisfy both inequalities then it is not a solution.
Infinite.
A linear equation in one variable has one solution. An equation of another kind may have none, one, or more - including infinitely many - solutions.
The area in the inequality gives you choices. Like the number of pounds that an elevator can carry is anything less than its maximum.
It is a system in which the solution set is a straight line.