Suppose a, b are two positive numbers. find an equation for the line in space passing through a on the x-axis and b on the y-axis.

What is the reflection image of (5,-3) across the line y = -x?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

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.