Answer
The value of \[f\left( -3 \right)\] is 26.
Work Step by Step
The provided equation is\[y=-7x+5\].
To find the value of \[f\left( -3 \right)\], substitute the value \[x=-3\] in the provided equation.
\[\begin{align}
& y=-7\left( -3 \right)+5 \\
& =21+5 \\
& =26
\end{align}\]