A quadratic function has the form f(x)=ax²+bx+c, which is a second-degree polynomial. If the coefficient 'a' is zero, we would no longer have a quadratic but a linear function instead. The graph of a quadratic function is called a parabola, and it's a u-shaped graph. This lesson covers the properties of this graph, such as symmetry, and the vertex. The axis of symmetry helps you graph a parabola since one side of a parabola is reflected across this axis. The vertex is the point where the axis of symmetry intersects the parabola. Depending on the shape of the parabola, vertex could be the minimum or maximum value of the function.
*These practice questions are only helpful when you work on them offline on a piece of paper and then use the solution steps function to check your answer.
Graphing Quadratic Functions
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.