Answer: Hope This Helps!
Examples:
1: How fast things such as cars and trains can go. Have you ever thought about how their speeds are calculated? When a police officer gives someone a speeding ticket, how do they know for sure if the person was speeding? Well, they use a simple linear relationship called the rate formula.
2: So, if someone spent 1 hour traveling a distance of 80 miles on a 55 mph road, then you can be sure that they were speeding because 80 miles divided by 1 hour gives you 80 mph. At first glance, this formula looks like it doesn't fit the criteria because it looks like it has three variables. But, it really is a linear relationship because at least one of your variables will always be a constant depending on your problem. You can have a constant rate for which you have to solve for distance or time. The relationship would be 35 = d / t or whatever the given rate is. It's the same if the distance is given as the constant, r = 100 / t.
3: Another example is that of converting temperature from Fahrenheit to Celsius. If you live in the United States, you probably use Fahrenheit, but if you discuss weather with a friend who lives in a different part of the world, you may need to convert the temperature to Celsius. You can use the conversion formula to convert one temperature type to the other.
