Graphs of quadratic function

• The graph of a quadratic function is a parabola. A parabola is a U-shaped curve that can open either up or down. The axis of symmetry is the vertical line passing through the vertex.
• The graph of a quadratic equation in two variables (y = ax2 + bx + c ) is called a parabola.
• quadratic things have something to do with squaring them — in other words, multiplying a number times itself or raising it to the second power. When you come across a math problem that includes "X squared," it's quadratic.