yes
True
A study of inverse relationships is one of a very large number of uses for rational functions. Only a rational function of a very special kind will be of any use.
Cartestian plane
Not every linear relationship is a variation, but every variation is a type of linear relationship. A linear relationship describes a consistent change, often represented by a straight line, while variation specifically refers to a proportional relationship, such as direct or inverse variation. In direct variation, one variable is a constant multiple of another, while in inverse variation, one variable is inversely proportional to another. Thus, while all variations are linear, not all linear relationships imply a strict variation.
To determine if a relationship represents direct or inverse variation, examine how the variables change in relation to each other. In direct variation, as one variable increases, the other also increases (e.g., ( y = kx ), where ( k ) is a constant). In inverse variation, as one variable increases, the other decreases (e.g., ( y = \frac{k}{x} )). You can also look for a constant ratio or product; in direct variation, the ratio ( \frac{y}{x} ) is constant, while in inverse variation, the product ( xy ) is constant.
yes
True
A study of inverse relationships is one of a very large number of uses for rational functions. Only a rational function of a very special kind will be of any use.
The inverse variation is the indirect relationship between two variables. The form of the inverse variation is xy = k where k is any real constant.
Cartestian plane
the output is halved
Not every linear relationship is a variation, but every variation is a type of linear relationship. A linear relationship describes a consistent change, often represented by a straight line, while variation specifically refers to a proportional relationship, such as direct or inverse variation. In direct variation, one variable is a constant multiple of another, while in inverse variation, one variable is inversely proportional to another. Thus, while all variations are linear, not all linear relationships imply a strict variation.
9
the output is divided by 3.
They are inverse functions of each other.
the output is divided by 4
If a variable X is in inverse variation with a variable Y, then it is in direct variation with the variable (1/Y).