Answer
See image
Work Step by Step
Let $f_{1}(x)=x^{2}$.
Then, $f(x)=2f_{1}(x)+4$.
Starting with the graph of $f_{1}(x)=x^{2}$ (black-dashed),
stretch it vertically by factor 2 to obtain the graph of $2f_{1}(x)$ (green dashed),
and then raise it up 4 units to obtain $2f_{1}(x)+4=f(x)$ (red).
