The general equation appears as \(Ax + By + C = 0\). However to build up an equation use \(y - b = m(x - a)\) where \(m\) is the gradient and \((a,b)\) is a point on the line.

Any straight line graph has a constant gradient, which is calculated by the change in 𝑦 divided by the change in 𝑥, along any section of the graph. The gradient is measuring the steepness of the ...

The letter written by Albert Einstein features the famous E=mc2 equation A handwritten letter from Albert Einstein to Polish-US physicist Ludwik Silberstein, dated October 26, 1946, AFP Boston: A ...