Cubic and Reciprocal Graphs

You might need to draw or interpret cubic and reciprocal graphs in your exam

You can use a table of values to draw any graph, but it helps if you know what the general shape of the graph is going to be

Graphs that contain an x^3 term and no higher powers of x are called cubic graphs

Here are two examples

Graphs of the form y = k/x where k is a number are called reciprocal graphs

Here are two examples

The graphs get closer and closer to the x-axis and y-axis but never touch them

With a cubic graph if you recognise the shape of the graph then it’s easier to tell if you’ve plotted your coordinates correctly

You might need to draw or interpret cubic and reciprocal graphs in your exam

You can use a table of values to draw any graph, but it helps if you know what the general shape of the graph is going to be

Graphs that contain an x^3 term and no higher powers of x are called cubic graphs

Here are two examples

Graphs of the form y = k/x where k is a number are called reciprocal graphs

Here are two examples

The graphs get closer and closer to the x-axis and y-axis but never touch them

With a cubic graph if you recognise the shape of the graph then it’s easier to tell if you’ve plotted your coordinates correctly