To determine the constant term \(c\) in the standard form of a quadratic function, which is expressed as \(y = ax^2 + bx + c\), you need to identify the y-coordinate of the vertex of the parabola or its intercept with the y-axis (when \(x = 0\)).
From the description you provided, the parabola opens downwards and then curves upwards, indicating it is likely a "U" shaped graph. The constant term \(c\) corresponds to the value of \(y\) when \(x = 0\).
You can typically find this value by looking at the graph of the parabola at the point where it intersects the y-axis. Without the actual graph, I am unable to provide the specific value.
However, based on the likely structure of parabolas, if you notice from the graph where \(x = 0\), read off the y-coordinate value at that point to find the constant term \(c\).
If there’s any specific point on the graph or further details you could share, I could assist better. Otherwise, follow this process and you should be able to find \(c\).