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.
And life without parole prisoners face, on average, 30 or 40 years in prison while the annual cost of incarceration is $40,000 to $50,000 a year for each prisoner or more! There is no question that the up front costs of the death penalty are significantly higher than for equivalent LWOP cases.