LINEAR FUNCTIONS Graphing And Analysis (Page 1 of 7)

Let's graph the line x + 3y = 14. By isolating y, the equation can be written as the linear function y = -x/3 + 14/3. Enter this function as Y1, then try a standard graph.

 Y= key. (Clear any previous functions)
 Negation key. X,T,theta,n key. Divide key. 3 Plus key. 14 Divide key. 3

 ZOOM key. 6: menu selection.

 Calculator screen image. Calculator screen image.

A comprehensive graph of a linear function should show both intercepts. The x-intercept is not visible with the standard window. Since the x-intercept is 14, we must increase Xmax. Set Xmax=20 and Xscl=5.

 WINDOW key. Down arrow key. 20 ENTER key. 5

 GRAPH key.

 Calculator screen image. Calculator screen image.
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