## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$f(-1)=5$
To find $f(-1)$ in $f(x)$, substitute $-1$ to $x$ to obtain: $f(x)=2-3x \\f(-1)=2-3(-1) \\f(-1)=2-(-3) \\f(-1)=2+3 \\f(-1)=5$