The graph of a quadratic function is a U-shaped curve called a parabola. The sign on the coefficient a of the quadratic function affects whether the graph opens up or down.
a graph of quadratic function is called a parabola and has a curved shape. one of a main points of a parabola is it's vertex. it is the highest or the lowest point on it's graph. you can think like an endpoint of a parabola.
