Rate of change of linear functions
Bank accounts
Salaried workers receive their pay check every month and
deposit it in their bank account. During
the month, they withdraw money from the account.
Some employees cannot make it through the month
on their salary and must borrow from
the bank.
The graphs in the figure describe the amount of money
in the bank accounts of five employees for a period
of four months from the beginning of the year.
Compare the employees by the following criteria:
- Amount of money they had in their bank accounts before
the beginning of the year.
- Their monthly salary.
- Their daily expenses.
- The amount of time before they started borrowing (if at all).
- Changes in their savings from month to month.
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| amount of money in bank account (dollars) |
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