But to calculate how many individuals live below the poverty line, household incomes must be converted to equivalent individual incomes (including 'incomes' for children). It may not be true that 'two can live as cheaply as one', but the amount required to maintain a given standard of living does not rise in direct proportion to the number of people in the home. The cost of heating, or a television or an Internet connection, for example, does not double if there are four people rather than two.