The graph of a quadratic function is a U-shaped curve called a parabola.

What is the U-shaped graph called?

The graph of a quadratic function is a parabola, which is a "u"-shaped curve.

What does the U in graphs mean?

more ... The set made by combining the elements of two sets. So the union of sets A and B is the set of elements in A, or B, or both. The symbol is a special "U" like this: ∪