Question

the graph of $y = f(x)$ is shown below. find all values of $x$ where $f(x) = 4$.

Explanation:

Step1: Draw horizontal line $y=4$

Draw a horizontal line across the graph at $y=4$.

Step2: Find intersection x-values

Locate where the line $y=4$ crosses the parabola. The intersection points correspond to $x=0$ and $x=4$.

Answer:

$x=0$ and $x=4$