# What is the relationship between two quantities in which the ratio of one quantity to the other quantity is constant?

A linear relationship

### Is direct variation a function?

A direct variation is a situation in which two quantities -- such as hours and pay, or distance and time -- increase or decrease at the same rate. The ratio between the quantities is constant; that is, as one quantity doubles, the other quantity also doubles. so yes it is. -add on- A direct variation is in the form y=ax where a is an constant.

### What is the difference between equations and proportions?

A proportion is generally multiplicative relationship between two measures of a quantity. An equation is a mathematical statement that relates two quantities. The quantities may contain a number of expressions, with each expression comprising a number of numerical constants, variables and functions.

### How do we use variables in the real wold?

Use variables to represent two quantities in a real-world problem that change in relationship to one another; write an equation to express one quantity, thought of as the dependent variable, in terms of the other quantity, thought of as the independent variable. Analyze the relationship between the dependent and independent variables using graphs and tables, and relate these to the equation.

### What is law of directly proportion?

law if directly proportional states that there is a relation between two quantities in such a way that if one quantity increases then other would also increase by keeping some conditions constant. for example: if we keep the pressure on a gas enclosed in a cylinder constant and vary its temperature then its volume will also vary directly.

### What is constant of variation in math terms?

It is a relationship between two variables such that one variable os always larger than the other by a multiple which is the constant of variation. It is a relationship between two variables such that one variable os always larger than the other by a multiple which is the constant of variation. It is a relationship between two variables such that one variable os always larger than the other by a multiple which is the…