Urgent! will mark brainliest
use the vertical-line test to determine whether the relation is a function. if not, identify two points a vertical line would pass through.
a function
b not a function; (−3, 0) and (3, 0)
c not a function; (3, 2) and (−3, −2)
d not a function; (2, −2) and (2, 2)