Write an Equation for the Linear Function F Satisfying the Given

Multiple Choice

Write an equation for the linear function f satisfying the given conditions.
- $f ( - 3 ) = 8$ and $f ( 1 ) = 4$

A) $f ( x ) = - 3 x - 1$
B) $f ( x ) = - x + 5$
C) $f ( x ) = 3 x + 1$
D) $f ( x ) = - \frac { 8 } { 3 } x$