The 4th Tom Rocks Maths Appeal livestream start on the them of linear graphs – including infinite gradients – before moving on to lines of best fit via least-square regression, Fourier series, a proof that the square root of two is irrational, and the gradient function in 3D… Enjoy!

Watch the accompanying video lesson on Straight-line Graphs here.

Watch the Maths Appeal team of Bobby and Susan answer viewers questions here.