The graph labeled "A" represents the function
. As a quadratic function, it forms a downward-facing parabola.
The function
is a quadratic function, and its graph is a downward-facing parabola since the coefficient of the
term is negative.
1. The vertex of the parabola can be found using the formula
and
, where a, b, and c are the coefficients of the quadratic equation ax^2 + bx + c.
2. The axis of symmetry is the vertical line passing through the vertex.
3. Determine the direction of opening, which is downward in this case.
Therefore, graph A is the answer.