Three relationships are described below: I. The amount of fuel used on a trip increases as the size of the car increases and as
the distance traveled increases. II. As the number of people helping mow a lawn increases, the time it takes to mow the lawn decreases. III. The cost of having a house painted increases as the size of the house increases. What type of variation describes each relationship?
Variation are of 2 types: Direct variation that states 'if x increases, y increases'. And inverse variation which states ' if x increases, y decreases and y increases x increases'.
1. The amount of fuel used on a trip increases as the size of the car increases and as the distance traveled increases. = Direct variation
2. As the number of people helping mow a lawn increases, the time it takes to mow the lawn decreases = Inverse variation
3. The cost of having a house painted increases as the size of the house increases. = Direct variation
A right angle formed at the edge of any circle will always create an arc of 180 degrees. This is true no matter where it is placed and no matter the side lengths.
