Linear relationships in real life

Linear relationships

In real life

1. Constant Speed

If a car is moving at a constant speed, this produces a linear relationship. For example, a car moving constantly at 50 km/ hour doesn’t change the rate at which it is moving. With each hour, its speed remains fixed

2 .Sales

If you have a coffee shop, you can relate the sales you make with the number of sandwiches you sell. This produces a linear relationship expressed in the following way:Sales = price x sandwiches sold y=2x which is a linear equation where y = sales in dollars and x = sandwiches sold. 2 is the constant value that stands for the price of one sandwich

If your speed is 40km per hour, we can show a linear relationship between two variables: the hours you travel and the distance you travel. This can be expressed as linear equation: y=40x where y is your distance and x is the hours you have traveled.

3. Distance traveled

4. Trend lines

This graph shows temperatures over the course of ten days. If you were trying to predict the temperature on the 11th hard day on this chart, a good guess would be 70.5 degrees.

5. The slope of a line

When a car is beginning to climb up a hill, the height of the hill is 3 meters and the length of the hill is 4 meters, this show a linear relationship

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