Question

Which relation is a function? (7,8) (5,0) (-3,1) (-5,0) (-3,2) (0,0) (1,1) (4,2) (9,3) (16,4) (-4,1)(-2, 2.5) (0,4)(-4,-1)(-2,-2.5) (1,0) (2,1) (3,2)(1,3) (2,4)

Answer 1

Function has an input and an output. Generally, a function relates each value of a set with exactly one value of another set. According to our definition the function in the relation below will be

`(0,0)(1,1)(4,2)(9,3)(16,4)`

All the other options has a x value that is related to more than one values in y.