[size=100]We have already seen how to create new objects (e.g. points, lines, circles) by using the [i]Graphics Tools[/i] provided in the [i]Toolbar[/i]. Now we will graph by entering equations and coordinates into the[i] Algebra Input[/i] and pressing the [i]Enter [/i]key.[br][/size]

1.[icon]https://wiki.geogebra.org/uploads/thumb/f/f6/Menu-button-open-menu.svg/120px-Menu-button-open-menu.svg.png[/icon]Select the [i]Menu [/i]button in the upper right corner of the GeoGebra window.[br]2.[icon]https://wiki.geogebra.org/uploads/thumb/6/67/Menu-view.svg/120px-Menu-view.svg.png[/icon]Open the [i]View[/i] menu.[br]3. Select [i]Algebra[/i] [i]Input[/i] in addition to the[i] Graphics [/i]view to add the input lines for our equations or functions.

[size=100][table][tr][td nowrap][code]y = 3 x + 1[/code][/td][td]Enter the linear equation [code]y = 3*x + 1 [/code]into the [i]Algebra Input[/i] and press the [i]Enter [/i]key.[/td][/tr][tr][td nowrap][code]f(x) = x² + 2[/code][/td][td]Enter the function [code]f(x) = x^2 + 2[/code] into the [i]Algebra Input[/i] and press the [i]Enter [/i]key.[/td][/tr][tr][td nowrap][code]B = (2, 1)[/code][/td][td]Enter [code]B = (2, 1)[/code] into the [i]Algebra Input[/i] and press [i]Enter [/i]in order to create a new point. Create another new point [code]C = (-1, 3)[/code][/td][/tr][tr][td][center][icon]https://tube.geogebra.org/images/ggb/toolbar/mode_join.png[/icon][/center][/td][td]Select the [i]Line [/i]tool from the [i]Toolbar [/i]and click twice in the [i]Graphics View[/i] or on the two existing points [i]B[/i] and [i]C[/i] to create a line.[/td][/tr][/table][br][/size][u]Hint[/u]: Click on the [img]https://wiki.geogebra.org/uploads/thumb/d/dc/Keyboard_open.svg/20px-Keyboard_open.svg.png[/img] keyboard icon in order to open a [b]virtual keyboard[/b].

[size=100]You can drag existing objects in the [i]Graphics View[/i], or change their equations and coordinates in the [i]Algebra View[/i].[br][br][/size][table][tr][td][size=100]1.[/size][/td][td][size=100][icon]https://tube.geogebra.org/images/ggb/toolbar/mode_move.png[/icon][/size][/td][td][size=100]Select the [i]Move [/i]tool and drag objects in the [i]Graphics View[/i] to change their position.[/size][/td][/tr][tr][td][size=100]2.[/size][/td][td][br][/td][td][size=100]Double click on an object in the [i]Algebra View[/i] in order to directly change its equation or coordinates, or redefine it.[/size][/td][/tr][/table][size=100][br][/size]

[size=100]Sometimes, you may want to delete objects that you created in one of the following ways:[br][/size][list][*][size=100]Select the [img]https://wiki.geogebra.org/uploads/thumb/3/38/Menu-edit-undo.svg/16px-Menu-edit-undo.svg.png[/img] [i]Undo [/i]button in order to undo the last object(s) you created.[/size][/*][*][size=100]Use the [img]https://wiki.geogebra.org/uploads/thumb/8/86/Mode_delete.svg/16px-Mode_delete.svg.png[/img] [i]Delete[/i] tool in order to delete any object you created.[br][u]Hint[/u]: Click on the last [i]Tool[/i] icon in order to open the corresponding [i]Toolbox[/i]. Select the [img]https://wiki.geogebra.org/uploads/thumb/8/86/Mode_delete.svg/16px-Mode_delete.svg.png[/img] [i]Delete [/i]tool from the [i]Toolbox[/i] and click on the object(s) you want to delete.[/size][/*][/list][size=100][br][/size]