Learn how to calculate the equation of a line from a graph, work out the gradient from an equation, and visualise intercepts with this step-by step guide.

Calculating a Least Squares Regression Line: Equation, Example, Explanation If you want a simple explanation of how to calculate and draw a line of best fit through your data, read on!

Once the equilibrium price is known, you can then use the information to calculate the demand equation. Some diminishing demands are linear and decline at a fixed rate.