Question

Is this a function? y or y not

{(6, -6), (7, -7), (3, -3)}

Answer 1

yes

Answer 2

if x-values are unique, then it is a function but if there's x-value that is repeated, then it is not a function.

Answer 3

y?

Answer 4

because http://www.mathsisfun.com/sets/function.html

Answer 5

so it is a function

Answer 6

right=D

Answer 7

but how bout this if f(x)=x^2+2x,find f(-1)

Answer 8

substitute x as -1..

Answer 9

ok i did the anwser is negative 1

Answer 10

yes:)