Question

Which of the relations has a domain of {-5, 0, 5}?

{(-5, 0), (0, 5), (1, 0)}
{(-5, 5), (0, 5), (5,5)}
{(0, -5), (0, 0), (0, 5)}

Answer 1

Domain = set of possible x values. Were looking for x values that equal -5,0,5. Therefore, the only possible set of numbers that matches is option 2; {(-5,5),(0,5),(5,5)}

Answer 2

It is the the middle one. The domains are the ones in the place of x in (x,y)