MathsNet: G - Graphs - How to plot them

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Page ID: 11668

G | Graphs | Quadratic curves | «How to plot them»

To plot the graph of a quadratic function you must first create a table of values. Then choose suitable axes that will allow all these values to be plotted. Plot the values, then draw a smooth curve through the points.

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Summary/Background

quadratic curves

These curves are called quadratic curves. When you plot them on a graph they are shaped like a hill or a valley. They always have a vertical line of symmetry going down through the middle.

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jsMath

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You can get a better display of the maths by downloading special TeX fonts from jsMath. In the meantime, we will do the best we can with the fonts you have, but it may not be pretty and some equations may not be rendered correctly.

This question appears in the following syllabi:

Syllabus	Module	Section	Topic	Exam Year
AQA GCSE (9-1) Foundation (UK)	A: Graphs	A12: Sketching Graphs of Functions	Graphs of Quadratics	-
CBSE IX (India)	Algebra	Polynomials	Constant, linear, quadratic and cubic	-
CIE IGCSE (9-1) Maths (0626 UK)	2 Algebra and Graphs	B2.10 Further Graphing	Graphs of Quadratics	-
Edexcel GCSE (9-1) Foundation (UK)	A: Graphs	A12: Sketching Graphs of Functions	Graphs of Quadratics	-
GCSE Foundation (UK)	Algebra	Graphs	Quadratic curves	-
GCSE Higher (UK)	Algebra	Graphs	Quadratic curves	-
OCR GCSE (9-1) Foundation (UK)	7: Graphs of Equations and Functions	7.01b: Graphs of Equations and Functions	Graphs of Quadratics	-
Universal (all site questions)	G	Graphs	Quadratic curves	-