use the scales of the axes and find how many units you go up or down for each unit you move right. To work out the equation of a line from a graph, find the gradient and the \(y\)-intercept.

use the scales of the axes and find how many units you go up or down for each unit you move right. To work out the equation of a line from a graph, find the gradient and the \(y\)-intercept.

and the y intercept (b) is -14. Deriving equations when you know one point and the slope aren't the only situations in which you can use point slope form. It can also be instrumental when you're ...