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Use the graph below to add points to the table below.  

A decreasing line, going through the following points: (negative 2, comma 10), (0, comma 6), (2, comma 2), (4, comma negative 2) and (6, comma negative 6).

For each point, find its -coordinate and its -coordinate and record the two numbers next to each other in the table.

  1. Write the rule in words.

    Notice that for every the -value increases, the -value decreases by . Also take into account the value for the

    Multiply by and then add .

  2. Explain how to use the table to predict the value of when is .

    Extend the pattern in the table. Answers may vary.