3.5.2

Direct & Inverse Proportions as Graphs

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Direct and Inverse Proportions as Graphs

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Direct proportion

  • If y and x are directly proportional, the graph of the relationship will be a straight line graph.
  • It must pass through the origin.
  • It could have a negative gradient.
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Inverse proportion

  • If y and x are inversely proportional then the graph is a curved line that never touches the x or y axes.
  • Part of the graph lies in the top right quadrant and part of the graph lies in the bottom left quadrant.

Jump to other topics

1Number

1.1Using Numbers

1.2Fractions, Decimals & Percentages

1.3Powers & Roots

1.4Accuracy

2Algebra

2.1Introduction to Algebra

2.2Manipulating Algebra

2.3Proofs & Functions

2.4Straight Line Graphs

2.5Common Graphs

2.6Transformations & Tangents

2.7Properties of Graphs

2.8Solving Equations

2.9Inequalities

2.10Sequences

3Ratio

4Geometry

4.1Introduction to Geometry

4.2Triangles & Quadrilaterals

4.3Transformations

4.4Circle Basics

4.5Circle Theorems

4.6Measurements & Units

4.7Calculating Area

4.8Triangle Formulae

4.93D Shapes

4.10Vectors

5Probability

6Statistics

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