Question

Which of the following expressions represents a function?

x2 + y2 = 9
{(4, 2), (4, –2), (9, 3), (9, –3)}
x = 4
2x + y = 5

Answer 1

Do you know what a function is?

Answer 2

well sort of

Answer 3

What do you think it is?

Answer 4

c

Answer 5

A function is where one input has EXACTLY one output. So do you thing that C has one input and one output?

Answer 6

oo so its B

Answer 7

Yes cause you dont have a repeat of a number the X side which is your output

Answer 8

OOO ok. lol can u continue helping me with 3 more questions if u have time?

Answer 9

You have:
(4, 2)
(4, –2)
(9, 3)
(9, –3)
This wouldn't be a function:
(4,2)
(4,-2)
(9,3)
(9,3)
Cause you have a repeat of the number 3 in the X side

Answer 10

ooooo ok lol thx alot

Answer 11

You're Welcome