Resizing Function Plots and Loci

Function plots and certain loci display an arrowhead at one or both endpoints, indicating that the function plot or locus extends farther in the indicated direction than is presently displayed.

You can also set or change the domain of a function plot numerically in its Plot Properties panel.

You can resize such a function plot or locus—to extend farther or less far in the direction of an endpoint arrowhead—by dragging that endpoint arrowhead with the Arrow tool. As you point at the arrowhead, the cursor becomes a multidirectional arrow. Press and drag in the direction in which the arrowhead points to extend the locus or function plot; drag in the opposite direction to contract it.