Question

can someone help me with this i really need help

Answer 1

ok so function means that x never repeats with a different y

function could be
table: (1,2) (2,4) (4,8) etc
graph the points


not a function could be
(1,1) (2,1) (3,1) (4,1)




range is the output or y
range is R={-4,-1,2,5}