Question

Determine whether each equation is a function.

$y=x^2$

Short answer

When $x=2$, then $y=4$. Since each value of$x$, corresponds to only one value$y$the equation define a function

Step-by-step solution

Step 1. Given Information

$y=x^2$

Step 2. If x=2

$$\begin{gathered} y={\left(2\right)}^2 \\ y=4 \end{gathered}$$