How do you know if a value is a solution for an inequality

1. How do you know if a value is a solution for an inequality?

2. How is this different from determining if a value is a solution to an equation?


3. If you replace the equal sign of an equation with an inequality sign, is there ever a time when the same value will be a solution to both the equation and the inequality



4.Why does the inequality sign change when both sides are multiplied or divided by a negative number


5. Does this happen with equations

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