The image shows a graph of a quadratic function $f$ and several related questions in Dutch.

a) Fill in the following:

• $f(3) =$
• $f(-1) =$
• $f(1) =$
• $f(\_ ) = -2$

From the graph:

1. To find $f(3)$, look at where $x = 3$ intersects the graph. This point corresponds to $f(3) = 2$.
2. For $f(-1)$, check the point where $x = -1$ intersects the graph, which gives $f(-1) = 2$.
3. For $f(1)$, find the intersection at $x = 1$, which shows $f(1) = 0$.
4. To find $f(x) = -2$, look for the value of $x$ where the graph is at $y = -2$. This occurs at $x = 2$.

So, the answers for part (a) are:

• $f(3) = 2$
• $f(-1) = 2$
• $f(1) = 0$
• $f(2) = -2$

b) Complete the table:

• For $x = -1$, $f(-1) = 2$ (from the graph).
• For $x = 4$, check the intersection at $x = 4$ on the graph, which gives $f(4) = 7$.

Thus, the completed table for part (b) is: [ \begin{array}{c|c|c} x & f(x) \ \hline -1