Use domain restrictions to match the existing parabola. Screen Shot 2015-12-14 at 10.22.13 AM.png
To match the existing parabola, we need to set restrictions on the domain of the function.
The parabola appears to open downwards, meaning its vertex is a maximum point. To find the domain restrictions, we need to determine the x-coordinate of the vertex.
From the graph, it looks like the vertex is at approximately x = 2. So, we can set a domain restriction for x such that x is less than or equal to 2.
Therefore, the domain restriction would be: x ≤ 2.