# Step 3 - Compute the Gradients

Learn about gradients and how they can be computed and visualized.

## We'll cover the following

## Introduction to gradients

A gradient is a **partial derivative**; why partial? Because one computes it with respect to (w.r.t.) a single parameter. Since we have two parameters, `b`

and `w`

, we must compute two partial derivatives.

A **derivative** tells you how much a given quantity changes when you slightly vary some other quantity. In our case, how much does our MSE loss change when we vary each one of our two parameters separately?

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