Question

Given the function f(x)=2x+5, f(2)=9.

True
False



Select all relations that are functions.

{(3,2), (5,8), (2,-2)}


{(4,-2),(4,-3),(4,6)}


{(-1,2),(-2,2),(-3,2),(-4,2)}


{(-7,5),(6,-3),(5,8)}

Answer 1

Answer:

1) true  

Step-by-step explanation:

all i could figure out, i dont understand #2