Investigating Domain and Range of Quadratic Functions

In this applet you will explore the domain and range of a quadratic function of the form . Drag the sliders to change the values of the coefficients , and . To visualize the domain, slowly drag the "d" slider. To visualize the range, slowly drag the "r" slider. To simultaneously see both domain and range visualizations, check the box.
  • What is the domain of a quadratic function? Express as an interval.
  • How can you determine the range of a quadratic function?