Question

Mark the incorrect statement by the graph of the function $f\left(x\right)=\left|x\right|$.

• A. $f\left(0\right)=0$
• B. $f(-4)=4$
• C. $f\left(4\right)=-4$
• D. The domain of $f\left(x\right)$ is all real numbers

Answer 1

Answer: (C)

$f\left(4\right)=-4$

Consider the function $f\left(x\right)=|x|$.

The domain for the function is $x\in R$ and the range is $f\left(x\right)\in R^{+}$ or $f\left(x\right)\in [0,\infty )$.

Hence, option C is incorrect.