Joehoffy
  • Joehoffy
Which of the tables represents a function?
Mathematics
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
Joehoffy
  • Joehoffy
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
Joehoffy
  • Joehoffy
@SamsungFanBoy @zepdrix @finallysoft @ganeshie8 @goopyfish908 @GenTorr @fatimab2000 @you_me @Owl Buzz @uri @I_Ask_Alot @rainbowswirl @WildQueen
zepdrix
  • zepdrix
Repeated x values = bad bad bad :o

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zepdrix
  • zepdrix
Or I guess I should say, repeated "inputs"
zepdrix
  • zepdrix
So notice that in table B, it maps the input 5, to two different output values, 2 and 6. No good. Not a function.
zepdrix
  • zepdrix
How bout the other ones? What do you think joejoe? :d
Joehoffy
  • Joehoffy
nope... i dont know anything
zepdrix
  • zepdrix
0_o
Joehoffy
  • Joehoffy
:D :P
zepdrix
  • zepdrix
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.
Joehoffy
  • Joehoffy
its table A
zepdrix
  • zepdrix
A is a function yay good job \c:/
Joehoffy
  • Joehoffy
yay! can u help me wif sum more?
zepdrix
  • zepdrix
mebe <.<
Joehoffy
  • Joehoffy
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?
Joehoffy
  • Joehoffy
$1 $4 $10 $36
Joehoffy
  • Joehoffy
@ZEPDRIX
Joehoffy
  • Joehoffy
oh mah gueshhh
zepdrix
  • zepdrix
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. \(\rm y=5x+40\)
zepdrix
  • zepdrix
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,\[\large\rm y=4x+30\]
Joehoffy
  • Joehoffy
what are you trying to say?
zepdrix
  • zepdrix
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.

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