Answer
True
Work Step by Step
A polynomial function of degree $n$, where $n$ is a nonnegative integer, is defined by
$\color{blue}{f(x)=a_{n}x^{n}+a_{n-1}x^{n-1}+\cdots+a_{1}x+a_{0}}$,
where $a_{n}, a_{n-1}, \ldots, a_{1}$ and $a_{0}$ are real numbers, called coefficients, with $a_{n}\neq 0$.
The number $a_{n}$ is called the leading coefficient.
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A linear function is a function defined as $f(x)=ax+b,$ where $a\neq 0.\\\\$
This form is equivalent to $f(x)=a_{1}x+a_{0},$
thus, every linear function is a polynomial of degree 1.
