How to find the formula for distance between 2 skewed lines?

Choose the correct slope of the line that passes through the points (1, -3) and (3, -5)

Which of the following expressions is equal to 2x^2+8

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.