Respuesta :

apologiabiology
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}

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