Integration Matcher

The graphs of six functions and the graphs of their integrals have been mixed up below. Can you match them together?

Extension: Can you suggest sensible algebraic forms for the graphs (which are all built from 'standard' functions)



You might also like to use accurate charts suitable for reading off measurements (you will need to print these in landscape mode)

First 6 charts
Second 6 charts

Can you use the charts to estimate the integrals between various points on the graphs of the differentials? Do your estimates match the readings off the graphs of the integrals?