Question

Pleeeeeeeeeeeeaaaaaassssseeeeeeeeeeeee help me!!!!!!!!! medal and fan!!!!!!!!!!!!!!!!!!!!!

Answer 1

http://prntscr.com/6v8t5i

Answer 2

Part A: The tables does represent a relation that is a function because none of the x values repeat.
Part B: f(h)=15h+5
f(8)=15(8)+5
f(8)=120+5
f(8)=125
here's my work, I just need part C... can someone help?

Answer 3

hi

Answer 4

hello, can you help me?

Answer 5

haha sure

Answer 6

Ok! Please explain and help me out, I feel like once you explain, I'll know, but right now I'm lost! XD

Answer 7

k wat u need help with :)

Answer 8

Part C of the question I posted at the top :) I posted my work for parts A and B too, so if there's any mistakes correct me, and then I believe u need it to answer the question.

Answer 9

o hehe im silly

Answer 10

haha, it's fine :P

Answer 11

give me a sec

Answer 12

Ok, take your time :)

Answer 13

lets seee

Answer 14

do i do part b or just c

Answer 15

Just C, under the question, I posted my work for A and B so u could see :)

Answer 16

o im so weird i was doin b sowwy let me do c haha

Answer 17

That's ok haha

Answer 18

yay now me lost ugh wait wat grade u in

Answer 19

8th

Answer 20

i gtg fan me and ill help later k bye buddy hehe

Answer 21

ok lol

Answer 22

@rational @rvc @nincompoop @tkhunny please help me :)

Answer 23

sowwy i gtg go i really wanted to help bbye

Answer 24

Ok, I'll be sure to tag you next time I need help though!

Answer 25

part a and part b look good

Answer 26

Yay! Can you help with C?

Answer 27

part c :

f(h) = 15h + 5
f(r) = 15r + 5

so the ordered pair would be (r, 15r+5)

Answer 28

Oh, ok, thank you!!

Answer 29

yw

Answer 30

Can you help with another?

Answer 31

wil try, post..

Answer 32

Ok.
http://prntscr.com/6v9497

Answer 33

I don't have any work for this one

Answer 34

for part a, you need to figure out the slope of each function

Answer 35

Ok, how do I do that when it's in a table like this?

Answer 36

look at the table of f(x)
pick any two points and see if you can find the slope

Answer 37

And how do i do it when written out?

Answer 38

as an equation

Answer 39

may be pick the points from last two rows :

(0, -1)
(1, 9)

slope= ?

Answer 40

idk...
:/

Answer 41

use slope formula

Answer 42

oh, ok one sec

Answer 43

http://www.coolmath.com/sites/cmat/files/images/06-lines-06.gif

Answer 44

10/1??

Answer 45

Yes! so the slope of f(x) is 10

Answer 46

oh, ok!

Answer 47

next find the slope of other function

Answer 48

How do I do that?

Answer 49

\[y=5x+1\]

the given equation is in slope intercept form, so slope = \(5\)

Answer 50

ooooooooohhhh

Answer 51

So the first has a greater slope..

Answer 52

Yep!

Answer 53

ok, now for B...

Answer 54

Now how do I find the y-intercept?

Answer 55

y intercept is the value of function when x = 0

look at the table, whats the value of y when x = 0 ?

Answer 56

-1?

Answer 57

Correct!

Answer 58

Yay, and the second has a y-intercept of 1, right?

Answer 59

Yes! good job

Answer 60

http://images.tutorvista.com/cms/images/67/slope-intercept-equation.png

Answer 61

Thanks sooo much!! One more? It's the last one I need help with :)

Answer 62

okay

Answer 63

http://prntscr.com/6v9da9

Answer 64

notice that the linear equation represents a line and the two points are given by

(2, 225)
(5, 480)

Answer 65

ok

Answer 66

start by finding the slope

Answer 67

I got m=255/3

Answer 68

simplify

Answer 69

85?

Answer 70

Yes

slope, m = 85

pick any point and write the equation in point slope form

Answer 71

https://s3.amazonaws.com/ck12bg.ck12.org/curriculum/108010/thumb_540_50.jpg

Answer 72

is y-y1 y2-y1? same for x-x1?

Answer 73

you have two points,
pick one point first

Answer 74

ok

Answer 75

lets pick (2, 225)

x1 = 2
y1 = 225

so the equation is y-225 = 85(x-2)

Answer 76

rearragnge and put it in standard form

Answer 77

oh, ok

Answer 78

y-225 = 85(x-2)

y-225 = 85x-170

85x-y = -55

Answer 79

thats the required standard form

Answer 80

oh yeah Ax-By=C, is how i learned it

Answer 81

Yep

Answer 82

So what do I do in part B?

Answer 83

put it in slope intercept form

Answer 84

oh, ok

Answer 85

85x-y = -55


y = 85x + 55

Answer 86

in function notation you get

f(x) = 85x + 55

Answer 87

ok

Answer 88

Now, idk what to say for part C

Answer 89

for part c :

the function can be graphed by plotting the given two points: (2, 225), (5, 480) and drawing a line through them.

label x axis with number of days rented and y axis with cost of rent

Answer 90

THANK YOU I WANT TO GIVE YOU 100 MEDALS, THANKS SO MUCH!!!!!!!!!!!

Answer 91

yw:)

Answer 92

:D