Linear equations are really helpful when we want to figure out how long it will take to travel between two places, A and B. They show a clear link between distance, speed, and time.

The main formula we use is:

Distance = Speed × Time

Let's Break It Down:

1. What the Letters Mean:

   • Let d stand for the distance from A to B.
   • Let r stand for the speed in miles per hour (mph).
   • Let t be the time it takes to travel that distance in hours.

2. Finding Time:

   • If we want to find out how long it will take, we can change the formula:

   t = d / r

3. An Example:

   • Imagine the distance (d) is 120 miles and the speed (r) is 60 mph. To find the travel time, we can calculate:

   t = 120 / 60 = 2 hours

Using these equations helps us plan our trips better and find the quickest way to get where we're going.