Writing about inequalities

Question

the king cobra is a roller coaster. it sells more than 900 tickets each day. what inequality can you write down to show the ticket sales, t? How would you graph the solutions of the inequality?

Answer 1

Since there are more than 900 tickets sold, we know that we want to create an equality that is greater than 900. We have two options for greater than inequalities: > 900 or ≥ 900. Since it is more than 900 tickets sold, we must use the > 900 because 900 is not included as a possible number of tickets sold. (If it said at least 900 tickets, then we would say ≥ 900)

So we can say t ≥ 900. To graph this, we would draw a dotted line through the point y = 900. The dotted line implies that the 900 is not included as part of the solution. We would then shade in everything above - or greater - than that line to indicate that anything greater than 900 is a possible solution.