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It is necessary to understand a problem situation so it can be analyzed and used to make predictions and decisions.

Example: Tickets at the local movie theater are $9 per person.

When information is given in a verbal description about two related quantities, relation a table can be created.

Fill in the blanks.

The two related quantities are the Interactive button. Assistance may be required. _____ cost of the ticket and the Interactive button. Assistance may be required. _____ number of tickets purchased.
The cost of one ticket is Interactive button. Assistance may be required. _____ $9.

Knowing the relationship between the number of tickets and the price, a table can be created to find the cost for any number of tickets purchased.

Number of Tickets	Purchase Price
1	Interactive button. Assistance may be required. _____ 9
2	Interactive button. Assistance may be required. _____ 18
3	Interactive button. Assistance may be required. _____ 27
4	Interactive button. Assistance may be required. _____ 36
5	Interactive button. Assistance may be required. _____ 45
6	Interactive button. Assistance may be required. _____ 54

Since each ticket costs Interactive button. Assistance may be required. _____ $9 , the number of tickets can be multiplied by Interactive button. Assistance may be required. _____ $9 to get the purchase price.
Because this relationship is known, the purchase price of any number of tickets can be predicted by multiplying by Interactive button. Assistance may be required. _____ $9.
An algebraic equation for the relationship is Interactive button. Assistance may be required. _____ y = 9x.