The line -2 x + 5y = 10 is rotated 90 degrees about its y-intercept. Which linear equation represents its image?

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.

Iknow the square root of 2 is irrational

Me because i don't understand how to do it.: )