Final answer:
To sketch the zeros and the vertex of a quadratic function, first locate the zeros on the x-axis and then locate the vertex on the graph.
Step-by-step explanation:
To sketch the zeros and the vertex of a quadratic function, we first locate the zeros on the x-axis. The zeros are the values of x where the function equals zero. In this case, the zeros are -4 and 2.
Next, we locate the vertex on the graph. The vertex is the highest or lowest point on the graph of a quadratic function. We are given that the vertex is (-1, -3).
To summarize, the zeros of the function are -4 and 2, and the vertex is located at (-1, -3).