Functions and coordinates

Creating new objects

You can create new objects (e.g. points, lines, functions) by either using the Graphics Tools provided in the Toolbar, or by entering their equations and coordinates into the Input Bar.

Task

Enter the following equations and coordinates into the Input Bar to graph functions and points.

Instructions

`y = 3 x + 1`	Enter the equation `y = 3x + 1` into the Input Bar* and press the Enter key.
`g(x) = x² + 2`	Enter the function `g(x) = x^2 + 2` into the Input Bar and press the Enter key.
`B = (2, 1)`	Enter `B = (2, 1)` into the Input Bar and press Enter to create a new point. Create another new point `C = (-1, 3)`.
	Select the Line tool from the Toolbar and click twice in the Graphics View or on the two existing points B and C to create a line.

Hint: Click on the

keyboard icon to open a Virtual Keyboard.

Try it yourself...

Modifying existing objects

You can drag existing objects in the

Graphics View, or change their equations and coordinates in the

Algebra View.

1.		Select the Move tool and drag objects in the Graphics View to change their position.
2.		Select an object in the Algebra View to directly change its equation or coordinates, or redefine it.

Deleting objects

You can delete objects that you created in one of the following ways:

Select the Undo button to undo the last object(s) you created.
Use the Delete tool to delete any object you created. Hint: Click on the last Tool icon to open the corresponding Toolbox. Select the Delete tool from the Toolbox and click on the object(s) you want to delete.