What is the domain of the function shown in the mapping?
{x | x = -5, -3, 1, 2, 6}
{yly=-9, -6, 0, 2, 4}
{x | x = -9, -6, -5, -3, 0, 1, 2, 4, 6}
{yly = -9, -6, -5, -3, 0, 1, 2, 4, 6}