problem
Favourite
Parabolic Patterns
The illustration shows the graphs of fifteen functions. Two of them have equations $y=x^2$ and $y=-(x-4)^2$. Find the equations of all the other graphs.
problem
Favourite
Intersections
Change one equation in this pair of simultaneous equations very
slightly and there is a big change in the solution. Why?
problem
Favourite
Tangled Trig Graphs
Can you work out the equations of the trig graphs I used to make my pattern?
problem
Whose line graph is it anyway?
Which line graph, equations and physical processes go together?