Question

Which of the following graphs represent a constant function?

• A. Only $\left(1\right)$ and $\left(4\right)$
• B. Only $\left(1\right),\left(2\right)$ and $\left(4\right)$
• C. Only $\left(1\right)$ and $\left(2\right)$
• D. Only $\left(1\right)$

Answer 1

The correct option is D Only $\left(1\right)$

Graph of a constant function, $y=c$ is always parallel to $x-$axis, which is represented by only first graph.