The Table Lists the Average Composite Scores on a National

Multiple Choice

The table lists the average composite scores on a national entrance exam for selected years. $$\begin{array} { c | c c c c c c c } \text { Year } & 2 & 4 & 6 & 8 & 10 & 12 & 14 \\\hline \text { Score } & 122.7 & 131.5 & 131.5 & 129.5 & 133.9 & 132.0 & 130.0\end{array}$$ (i) Make a line graph of the data. (ii) If the graph represents a piecewise-linear function f, find a symbolic representation for the piece of f located on
The interval [4, 6].

A) $$f ( x ) = 4.4 x - 8589.3 \text { if } 8 \leq x \leq 10$$


B) $$f ( x ) = 131.5 \text { if } 4 \leq x \leq 6$$


C) none of these
D) $$f ( x ) = 0.75 x - 1355 \text { if } 4 \leq x \leq 8$$