Table of Contents

## How are rates and unit rates similar and different?

A ratio is a comparison of two numbers or measurements. A rate is a special ratio in which the two terms are in different units. For example, if a 12-ounce can of corn costs 69¢, the rate is 69¢ for 12 ounces. This is not a ratio of two like units, such as shirts.

**What are units of rate of change?**

The units on a rate of change are “output units per input units.” The average rate of change between two input values is the total change of the function values (output values) divided by the change in the input values.

**How is unit rate and slope related?**

Sample answer: For an equation such as y = 2.6x, the slope is the unit rate, which is the coefficient of x. For a table, the change in y divided by the change in x is the unit rate, or slope.

### Can unit rates be used to compare two rates?

Comparing Unit Rates The unit rate has a denominator equal to one when written as a fraction. Unit rates can be used to find larger equivalent rates. Let’s use a unit rate to solve a problem.

**Does a unit rate always relates quantities with the same units?**

④ A unit rate relates a quantity to 1. Unit rates can be used to compare two rates. Any rate is equivalent to its unit rate. A unit rate always relates quantities with the same units.

**Why are the units for average rate and instantaneous the same?**

The units are the same for both because they are ultimately both measuring the same thing, a rate. The instantaneous rate of change for something is the rate of change at a particular instant in time. The average rate of change of something is the rate averaged out over a given time interval.

## How does the unit rate of a proportional relationship relate to the slope of its graph?

For a proportional situation, the unit rate is the same as the slope of the line that represents the proportional data. In the figure below, the graph shows the cost of avocados.

**How do you calculate the rate of change?**

Divide the absolute change by the initial value to calculate the rate of change. In the example, 50 divided by 100 calculates a 0.5 rate of change. Subtract the initial value from the subsequent value to calculate the absolute change.

**What is the equation for unit rate?**

The unit rate is -1/3. In direct variation, y varies directly to x by a constant ratio k. Its equation looks like this: y = kx ; where k stands for the constant ratio.

### What are some examples of unit rate?

Students learn that a rate is a comparison of two measurements or amounts that have different units. For example, 60 miles in 2 hours is a rate. Students learn that a unit rate is a rate in which the second rate is 1 unit. For example, 30 miles in 1 hour, or 30 miles per hour, is a unit rate.

**What is the unit for rate constant k?**

K= Rate / [A]p [B]q. The unit for the rate constant `k’ depends upon the rate of the reaction, the concentration of the reactants and the order of the reaction. In the case of the first order reaction. K= Rate / [A]1 [B]2. K= mol dm -3 sec-1 / mol dm-3. Unit of. k = sec-1 for first order reaction.