Question

Which of the tables represents a function?

Answer 1

Table A
Input Output
7 2
8 1
5 6
Table B
Input Output
5 2
3 5
5 6
Table C
Input Output
1 2
1 9
7 3
Table D
Input Output
2 6
6 7
6 2








Table A
Table B
Table C
Table D

Answer 2

@SamsungFanBoy @zepdrix @finallysoft @ganeshie8 @goopyfish908 @GenTorr @fatimab2000 @you_me @Owl Buzz @uri @I_Ask_Alot @rainbowswirl @WildQueen

Answer 3

Repeated x values = bad bad bad :o

Answer 4

Or I guess I should say, repeated "inputs"

Answer 5

So notice that in table B,
it maps the input 5, to two different output values, 2 and 6.
No good. Not a function.

Answer 6

How bout the other ones?
What do you think joejoe? :d

Answer 7

nope... i dont know anything

Answer 8

0_o

Answer 9

:D :P

Answer 10

Table B was not a function because the 5 showed up twice in the "input" column.
Use that information!! :O
Look at the other options.

Answer 11

its table A

Answer 12

A is a function
yay good job \c:/

Answer 13

yay! can u help me wif sum more?

Answer 14

mebe <.<

Answer 15

Jessica and Nancy are members of different video game libraries. Jessica pays a membership fee of $40, and she pays $5 for every video game she rents. The following function shows the total amount of money, y, in dollars, that Nancy pays for renting x number of video games: y = 4x + 30.

How many more dollars does Jessica pay for a membership fee than Nancy?

Answer 16

$1
$4
$10
$36

Answer 17

@ZEPDRIX

Answer 18

oh mah gueshhh

Answer 19

So like... if we were to write Jessica's information into a function,
what would it look like?

Let the total she pays be y,
and the number of video games be x,

Then she pays a total of: 5 times the number of video games `plus` 40 membership fee.
\(\rm y=5x+40\)

Answer 20

Here is the membership fee in orange.\[\large\rm y=5x+\color{orangered}{40}\]
So now when you look at the other function you were given,
you should be able to determine which number is the membership fee for Nancy,\[\large\rm y=4x+30\]

Answer 21

what are you trying to say?

Answer 22

The question is telling you to compare the membership fees.
They didn't tell you Nancy's membership fee though,
so you have to determine which number in that equation represents her membership fee.