Answer:
If an inequality constraint holds as a strict inequality at the optimal point (that is, does not hold with equality), the constraint is said to be non-binding, as the point could be varied in the direction of the constraint, although it would not be optimal .There are two types of inequality constraints: limits on variables, often called explicit constraints such as Equation.The following table will make you even clear!
Speed limit Legal speed on the highway ≤ 65 miles per hourCredit card
Monthly payment ≥ 10% of your balance in that billing cycleText messagingAllowable number of text messages
per month ≤ 250Travel timeTime needed to walk from home to school ≥ 18 minutes