The parallel line will have the same slope which is 5. The perpendicular line will have a slope of which is the negative reciprocal. To assist you in seeing this relationship, look at 5 as the fraction . Its negative reciprocal would then be .
The Source. Cost of incarceration in the U.S. more than $1 trillion. The cost of incarceration in the United States exceeds $1 trillion, or six percent of gross domestic product, and dwarfs the amount spent on corrections alone, finds a new study from Washington University in St. Louis.
Operating costs averaged $22650 ($65/day) per inmate in fiscal year 2001 according to this report. It has much more info, tables by state and comparisons to amounts spent on health care, etc. Cost of incarcerating a US prisoner in secure custody in. 2003-4 was about $28 000 (Â£15 800).