Texas Instruments TINSPIRECX manual Analyse Graph Menu, Coordinates and labelled points

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Notice that all the intersections are added at once and that their co-ordinates are automatically displayed.

We will now use the Text tool: b16. Try labelling one of your fixed points by moving carefully to the point––make quite certain that only the point is highlighted and not one of the graphs or axes.

Points, lines and shapes can be drawn and manipulated on the graphing work area and this will be explored in the next tutorial. However, one more thing to try now is putting a grid on the work area. Press b26.

First Steps with TI-Nspire™

Tutorial 4: Graphing

Coordinates and labelled points

It’s easy to change the number of decimal places displayed: move the cursor over a displayed value and press - or +.

Analyse Graph Menu

As well as tracing graphs and using the Points tool, important points on graphs can also be identified by using the Analyse Graph tool. We will find the right-hand root of our quadratic function by pressing b61 to activate the zero tool. Then select the quadratic graph by clicking on it with x, you will then be prompted to select a lower bound my moving the cursor somewhere to the left of the desired root and click (x) and then to the right of the root and click again (x).

Lower Bound

There are number of features that can be identified using the Analyse Graph tool, spend some time exploring the other options available by pressing b6.

Upper Bound

© 2012 Texas Instruments Education Technology

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Contents First Steps About this document Contents Appendix TI-Nspire CX Keypad Layout Nothing on the screen? TI-Nspire DocumentsMemory Charging the handheld Battery LifeHome Screen First Steps with TI-Nspire Tutorial 1 TI-Nspire documents Scratchpad Documents, Problems and PagesNavigating Documents First Steps with TI-Nspire Tutorial 1 TI-Nspire documents Contextual Menus Check list of some key points in Tutorial Basic operations Calculator ApplicationApproximate Calculations History LessonMenu of maths templates TemplatesEffect of changed settings Document settings dialog boxGetting Set Ways to define variables Some AlgebraUse of function notation Statistical Distribution Tables Calculator MenuLists of random integers List of defined variables Variables Linked to DocumentsMaking Notes Why use Notes?Various text formatting Instructions Recording results Format sub-menu Splitting the ScreenWays to split the screen You must press /e and then b Use of Q+A template An inserted comment Use of proof template and symbolsMore Options from the Notes Menu Interactive NotesAsking Questions Check list of some key points in Tutorial Graphing View GraphingGraphs & Geometry Two Views Graphing FunctionsGrabbed tick mark on the axes Grab and Drag PracticeChanging the Axes Open-hand cursorEditing, Deleting or Hiding a Function Zoom settings Grabbed-sheet iconChanging f2 in the function history Points of intersection Tracing GraphsPoints and coordinates Trace picks out significant pointsCoordinates and labelled points Analyse Graph MenuManually Moving Graphs Using SlidersAlternative icons Transformed graph and equation Sequence Plotting Check list of some key points in Tutorial Drawing the base of the triangle GeometryView for Plane Geometry Two Parallel LinesConstruct the Triangle What’s grabbable?Many options in the Construction menu Storing the measurement as a variable Making MeasurementsVariables and Text Measurement menuChanging the attributes of the triangle Tidying Up and Using AttributesDynamic Changes Ready to grab a and slide itUnlocked/Unpinned Points B and C. Try Moving point B Area is now lockedCheck list of some key points in Tutorial Entering Data as Lists Lists & SpreadsheetConflict resolution Using FormulaeOne way to enter a formula Typical Spreadsheet Actions Function Tables Capturing DataHand-made function table Graph and table side by side Simple function table Options for function tablesFrequency Charts One and Two Variable Statistics Charts with One VariableShoe Sizes and Hand Spans Upper quartile displayed Charts for Categorical DataPie Chart displaying categorical data Comparing BoxplotsFitting a Line by Hand and Eye Charts with Two VariablesReady to add a 2nd variable Getting the Stats Drawing the Regression LineCalculated regression line Statistics Calculations menu Effect of moving a point from here … … to here Dragging on the ChartsWorking with Frequency Data Sets of statisticsTexas Instruments Education Technology Check list of some key points in Tutorial Draw and Measure a Circle Multiple RepresentationsMeasured circle Collecting Just a Little Data Setting up a scatter plot Data capture is under waySpreadsheet for Data Capture Two ScatterplotsMoving a straight line by hand Not a linear relationship Go to Town with Data CollectionFit a Straight Line Linear relationshipRegression Different Approach to ScatterplotsBasic quadratic ready for fitting… … and dragged into place