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Drawing Quadratic Graphs

Drawing Quadratic Graphs

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A quadratic graph comes from a formula with an x2x^2x2 term, such as y=x2−x−4y=x^2-x-4y=x2−x−4. Its shape is a smooth curve called a parabola, not a straight line. To draw it, you usually make a table of values first.

If the coefficient of x2x^2x2 is positive, the parabola opens upwards and has a lowest point. If the coefficient of x2x^2x2 is negative, it opens downwards and has a highest point.

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Question 1

3 marks

Here is the graph of y=4x+3−x2y = 4x + 3 - x^2y=4x+3−x2

Drawing Quadratic Graphs Revision Guide

  1. GCSE
  2. /Maths
  3. /Drawing Quadratic Graphs

Revision notes for Edexcel GCSE Maths Drawing Quadratic Graphs: explanations and worked examples.

Revision guides

Practise questions

1 of 5

For y=x2−x−4y=x^2-x-4y=x2−x−4, which coordinate should be plotted when x=3x=3x=3?