Question

Can someone please help me with this 10 question quiz? I suck at math. ):

Answer 1

okaiii hit us

Answer 2

The relation {(-5, 5), (-6, 7), (-7, 7), (-8, 0)} is a function.
TRUE
FALSE

Answer 3

what do you think it is???

Answer 4

look at your x values, are there 2 of the same number? that have 2 outputs?

Answer 5

No... So does that mean that it's true..?

Answer 6

Correct

Answer 7

look to see if the first numbers repeat
if they do, NOT a function
if they are all different, then it IS a function
ignore the second numbers

Answer 8

okay next one

Answer 9

What is the range of the inverse of relation {(1, 7), (2, -4), (5, 6), (2, 8)}?
{1, 2, 5}
{-4, 6, 7, 8}
{1, 5}
{-4, 7, 8}

Answer 10

Oh and thank you so much! (:

Answer 11

do you know what domain and range is?

Answer 12

Domain is x range is y

Answer 13

so your answer would be?

Answer 14

Oh... so then it's B?

Answer 15

Example 1 is the domain 7 is the range get it?

Answer 16

Correct!

Answer 17

next one

Answer 18

Find the inverse of f(x) = 2x - 2.
f-1(x) = -2x + 1
f-1(x) = -2x + 2
[DAM:NONE]

Answer 19

1 sec just double checking my work

Answer 20

I know but I dropped out when I was a freshman and now I'm 17 and trying to get my diploma. :P I'm just not that great at school. I barely past through middle school.

Answer 21

your first step is to complete the square which should give you y=x^2-2x

Answer 22

How did you do that?

Answer 23

now bring your 1 to both sides y+1=x^2-2x+1

and just sqrt the 2 so it will have your leftover 1

Answer 24

and by the looks of my work i dont think this is a function

Answer 25

not a function

Answer 26

Okay so then it would be C?

Answer 27

correctt

Answer 28

next one

Answer 29

If f(x) = 3x + 5 and g(x) = 2x - 9, find f(x) - g(x).
5x + 4
x - 4
x + 14
5x - 4

Answer 30

okay so this one is pretty much plugging in the answers

Answer 31

they tell you that f(x)=3x+5 and that g(x)=2x-9

Answer 32

So how would you do that?

Answer 33

they want you to plug those in to this problem----->f(x) - g(x)

Answer 34

Oh okay.. So let me work it out to see if I get it really quick...

Answer 35

so it would be----->3x+5-2x-9

Answer 36

okay

Answer 37

Okay I got it, so now what would you do after that?

Answer 38

combine your like terms

Answer 39

show me what you get

Answer 40

I got x-4

Answer 41

there you go! lol doing good :P

Answer 42

next oneee

Answer 43

If f(x) = x - 4 and g(x) = 2x - 3, find g and f

Answer 44

@Jelia97 after you get done with helping her, can you help me please?

Answer 45

2x + 3
2x + 7
2x - 7
2x - 11

Answer 46

so what they want you to do is put the 2 equations together

Answer 47

yes i will ari

Answer 48

Thank you :)

Answer 49

all you gotta do is combine them, what do you get?

Answer 50

Okay so do I include the f(x) and the g(x)

Answer 51

nope just put them together (x - 4 )( 2x - 3) combine like terms

Answer 52

oh okay. I got 2x-7

Answer 53

correct!

Answer 54

do you think you can handle the rest of your quiz?

Answer 55

Yes. Thank you so much for your help! I really appreciate it! <3 (:

Answer 56

welcome! good job :D

Answer 57

ill still be on if you need help tho lol

Answer 58

lol Thanks.