Directions

• FUNCTION: Enter the function in the f(x) box. Remember, do not use implied multiplication. To graph 2x you must enter 2*x.
• COORDINATES:
  • Click on the line to see the coordinates at that point.
  • Enter an exact value into x1 and click Graph to see a certain point.
• AXES: Click on an axis. Now you can drag the graph to recenter.
• SECANT will draw a secant line through two points x1 and x2.
  • Exact values for x1 and x2 may be entered in the box.
  • Clicking on the graph will use that point for x1, then x2.
  • A point on the line can be grabbed and moved along the graph.
  • A second value may be click on the graph to see two secant lines at the same time.
• TANGENT will draw a tangent line through x1 (x2 is ignored).
  • An exact value for x1 may be entered in the box.
  • Clicking on the graph will use that point for x1.
  • A point on the line can be grabbed and moved along the graph and the tangent line will update as the point is moved.
  • Multiple tangent lines can be viewed by clicking on the graph.