Independent and Dependent Quantities

Front

What is an independent quantity?

Back

An independent quantity is a variable that represents the input or cause in a relationship, which can be changed freely without depending on other variables.

Front

What is a dependent quantity?

Back

A dependent quantity is a variable that represents the output or effect in a relationship, which depends on the value of the independent quantity.

Front

In the equation y = 2x, what is the independent quantity?

Back

x is the independent quantity.

Front

In the equation y = 2x, what is the dependent quantity?

Back

y is the dependent quantity.

Front

If a car rental company charges $40 per day, what is the independent quantity?

Back

The number of days the car is rented.

Front

If a car rental company charges $40 per day, what is the dependent quantity?

Back

The total amount of money paid.

Front

What is a variable in mathematics?

Back

A variable is a symbol, often a letter, that represents a number in mathematical expressions or equations.

Front

How does changing the independent quantity affect the dependent quantity?

Back

Changing the independent quantity directly affects the value of the dependent quantity.

Front

If Terrence types 80 words per minute, what is the independent quantity?

Back

The number of minutes he types.

Front

If Terrence types 80 words per minute, what is the dependent quantity?

Back

The total number of words he types.