Question

Zero of the polynomial f(x) = 3x + 7 is
(a) $\frac{7}{3}$
(b) $\frac{-3}{7}$
(c) $-\frac{7}{3}$
(d) –7

Answer 1

Given: f(x) = 3x + 7

Zero of a polynomial is the value of x at which the polynomial becomes zero.

$$\begin{gathered} f\left(x\right)=0 \\ \Rightarrow 3x+7=0 \\ \Rightarrow 3x=-7 \\ \Rightarrow x=-\frac{7}{3} \end{gathered}$$

Therefore, zero of the polynomial f(x) = 3x + 7 is $-\frac{7}{3}$.

Hence, the correct option is (c).