HP Prime Graphing NW280AAABA manual Graph mode, Between them by tapping or

form of the equation being explored at the top and, below it, the current equation of that form. The keys you can use to manipulate the graph or equation appear below the equation. The x- and y-intercepts are given at the bottom.

There are two types (or levels) of linear equation available for you to explore: y = ax and y = ax + b. You choose

between them by tapping or .

The keys available to you to manipulate the graph or equation depend on the level you have chosen. For example, the screen for a level 1 equation shows this:

This means that you can press <, >, +, wand Q. If you choose a level 2 equation, the screen shows this:

This means that you can press <, >, =, \, +,

wand Q.

Graph mode	The app opens in graph
	mode (indicated by the
	dot on the Graph button
	at the bottom of the
	screen). In graph mode,
	the =and \keys
	translate the graph
	vertically, effectively
	changing the y-intercept of the line. Tap	to change

the magnitude of the increment for vertical translations. The <and >keys (as well as wand+) decrease and increase the slope. Press Qto change the sign of the slope.

The form of the linear function is shown at the top right of the display, with the current equation that matches the graph just below it. As you manipulate the graph, the equation updates to reflect the changes.

300 The Explorer apps