A circle is given with equation x2+y2=5 and a line with equation y=x-1. Find the centre and the ray of this circle.​

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.

What does independent variable and dependent variable mean in math?

Ithink i know it but i want to be sure so can you me out ?