Solves for any one of the 5 items in the standard budget line equation:

Income (I)

Quantity of x = Q_{x}

Quantity of y = Q_{y}

Price of x = P_{x}

Price of y = P_{y}

This calculator has 5 inputs.

Income (I)

Quantity of x = Q

Quantity of y = Q

Price of x = P

Price of y = P

This calculator has 5 inputs.

- budget
- an estimate of income and expenditure for a set period of time. In economics, a budget constraint represents all the combinations of goods and services that a consumer may purchase given current prices within his or her given income.
- budget line equation
- Equation showing all the combinations of goods and services that a consumer may purchase given current prices within his or her given income

I = P_{x}Q_{x}+ P_{y}Q_{y}where I = Income, P denotes price, Q denotes quantity - equation
- a statement declaring two mathematical expressions are equal
- price
- the amount of money expected, required, or given in payment for something
- quantity
- amount of something