A rate of change calculator is a tool that can be used to calculate the rate at which a variable is changing over time. It is a valuable tool for professionals in a variety of fields, including finance, economics, and engineering. In this article, we will discuss the basics of rate of change and how to use a rate of change calculator.

## What is Rate of Change?

Rate of change, also known as the slope, is the measure of the change in one variable with respect to another over a specific period of time. It is a crucial concept in mathematics, physics, and many other fields.

The rate of change is usually calculated using two points on a line or curve. The formula for calculating the rate of change is as follows:

Rate of change = \frac{(y2 – y1)}{(x2 – x1)}

Where (x1, y1) and (x2, y2) are the two points on the line or curve.

In other words, the rate of change is the difference between the y-values divided by the difference between the x-values. It can be positive, negative, or zero, depending on the direction of the change.

For example, if the price of a stock increases from $10 to $20 over a period of one year, the rate of change would be:

Rate of change = \frac{($20 – $10)}{(1 \ year)} = \frac{$10}{year}

This means that the price of the stock increased by $10 per year.

A rate of change calculator is a valuable tool for professionals in many fields. It allows you to quickly and easily calculate the rate at which a variable is changing over time. By understanding the basics of rate of change and how to use a rate of change calculator, you can make more informed decisions and analyze data more effectively.