Based on the coordinates of the points, determine which of the points [[$(1, 2), (0, 6), (6, 0), (-2, 0), (0, 11), (0, 0)$]] are located

a) on the x- axis
[[$ (1, 2) $]]
[[$ (0, 6) $]]
[[$ (6, 0) $]]
[[$ (-2, 0) $]]
[[$ (0, 11) $]]
[[$ (0, 0) $]]

b) on the y- axis
[[$ (1, 2) $]]
[[$ (0, 6) $]]
[[$ (6, 0) $]]
[[$ (-2, 0) $]]
[[$ (0, 11) $]]
[[$ (0, 0) $]]