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Click "Edit scene" (fourth button) and delete the contents of the Function Definition.
Enter something like z=x+y. Add a Function 2, and enter a similar equation, for example z = -2x-2y.
In general you can enter any equation of the form z = ax+by+c
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An applet from Arnab's Goodies

## Glossary

### equation

A statement that two mathematical expressions are equal.

### function

A rule that connects one value in one set with one and only one value in another set.

Full Glossary List

## This question appears in the following syllabi:

SyllabusModuleSectionTopicExam Year
AQA A-Level (UK - Pre-2017)FP4VectorsPlanes-
AQA A2 Further Maths 2017Pure MathsVectorsPlanes-
AQA AS/A2 Further Maths 2017Pure MathsVectorsPlanes-
CBSE XII (India)Vectors and 3-D GeometryVectorsCross product definition, geometrical interpretation, properties and application-
CIE A-Level (UK)P3VectorsPlanes-
Edexcel A-Level (UK - Pre-2017)FP3VectorsPlanes-
Edexcel AS Further Maths 2017Core Pure MathsVectorsPlanes-
Edexcel AS/A2 Further Maths 2017Core Pure MathsVectorsPlanes-
I.B. Higher Level4VectorsPlanes-
Methods (UK)M4VectorsPlanes-
OCR A2 Further Maths 2017Pure CoreFurther VectorsPlanes-
OCR MEI AS Further Maths 2017Core Pure AVectors and 3-D SpacePlanes-
OCR-MEI A-Level (UK - Pre-2017)FP3VectorsPlanes-
Pre-Calculus (US)E1VectorsPlanes-