Decide Which of the Two Given Functions Is Linear and Find

Decide which of the two given functions is linear and find its equation. $$\begin{array} { | l | l | l | l | l | l | } \hline \boldsymbol { x } & 0 & 1 & 2 & 3 & 4 \\\hline f ( x ) & 1 & - 1.5 & - 4 & - 6.5 & - 9 \\\hline \boldsymbol { g } ( \boldsymbol { x } ) & 1 & - 2 & - 5 & - 8 & - 10 \\\hline\end{array}$$

A) $f ( x ) = 4 + 3 x$
B) $g ( x ) = 1 - 3 x$
C) $g ( x ) = 1 + 2.5 x$
D) $f ( x ) = 4 - 3 x$
E) $f ( x ) = 1 - 2.5 x$

Correct Answer:

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