Question

Please help I can kind of do this but, then I get stuck!! Ugh!!
2x- 8y = 32

slope-intercept form:

slope =

y-intercept =

Answer 1

Slope = 1/4

Answer 2

y-intercept = -4

Answer 3

where did you get -4? and 1/4?

Answer 4

https://www.desmos.com/calculator

Answer 5

Slope-Intercept Form = y = 1/4x - 4

Answer 6

slope intercept form is y = mx + b

2x - 8y = 32 -- subtract 2x from both sides
-8y = -2x + 32 -- divide by -8
y = 1/4x - 4 ===> slope intercept form

in y = mx + b form, the slope is in the m position, therefore, the slope is 1/4 <==slope
in y = mx + b form, the y intercept is in the b position, therefore, the y intercept is -4, or (0,-4)

to find the x intercept, sub in 0 for y
2x - 8y = 32
2x - 8(0) = 32
2x = 32
x = 16 <== x intercept is 16 or (16,0)

Answer 7

another way to find the y intercept is to sub in 0 for x

Answer 8

alright give me a moment to try and work this out for myself ok texachic101?

Answer 9

ok..sorry

Answer 10

Its ok thanks you explain well! :)

Answer 11

you want me to give you an example question for you to answer ?

Answer 12

ya hold on let me try and figure out what you put above first because at the beginning I am having trouble finding where you subtracted 2x from both sides because I don't see it.

Answer 13

let me put in ALL the steps I used..
2x - 8y = 32 -- we want this in y = mx + b form, so we have to subtract 2x from both sides
2x - 2x - 8y = -2x + 32 -- combine like terms
-8y = -2x + 32 (see how the 2x's cancelled each other out on the right side)
now divide both sides by -8, and remember what you do on one side of the equal sign, you have to do on the other side
-8y/-8 = -2/-8 x + 32/-8
y = 1/4x - 4

does that help ?

Answer 14

ya that does help now I am almost done doing it the way you did so that I can understand

Answer 15

now when you have it in y = mx + b form, the slope is in the m position and the y intercept is in the b position.
slope = 1/4
y intercept = -4

you can also find the y intercept by subbing in 0 for x in the original equation
to find the x intercept, sub in 0 for y in the original equation

Answer 16

Ok I get what you did perfectly!! :)

Answer 17

It would help if you could post a practice question like this one to help me understand better but, before you do I was going to ask you what the slope intercept was if I already have the slope and y intercept filled out.

Answer 18

slope intercept form is y = mx + b

if you only needed to find the x and y intercepts, you would not have to put it in y = mx + b form, you would just do your subbing in 0 for each variable to find them.

2x + 4y = 8
turn into slope intercept formula
slope =
y int =
x int =
now what can you do with this ?

Answer 19

ok let me try to figure this out and I will post my answers in a few

Answer 20

sure thing :)

Answer 21

Do I subtract 4y from both sides like we did before?

Answer 22

no...you want to get the y term on one side and everything else on the other side. So by subtracting 2x from both sides, we will end up with 4y on one side and everything else on the other side. So, try subtracting 2x from both sides and see what you get ?

However, you can solve it by subtracting 4y from both sides, but then you would have to also subtract 8 from both sides to get the y term by itself

Answer 23

ok can you like draw this so that I can see it because I don't really know which two sides I should subtract from.

Answer 24

what you do on one side of the equal sign, you have to do on the other side.
2x + 4y = 8 -- subtract 2x from both sides
2x - 2x + 4y = -2x + 8 -- combine like terms
4y = -2x + 8

with me so far ?

Answer 25

kind of

Answer 26

Now we divide both sides by 4?

Answer 27

here's a little tip....when adding or subtracting a number....when you move it across the equal sign, the sign changes.

3x + 6y = 9....if you wanted to move the 3x across the equal sign, just move it and change the sign.
6y = -3x + 9

or

-3x + 6y = 9....if you wanted the -3x moved across the equal sign, move it and change the sign
6y = 3x + 9

this does not work for division/multiplication

Answer 28

yes...divide both sides by 4

Answer 29

ok now I have y=-2/4x+2 correct?

Answer 30

correct..but it can be reduced....the slope can

Answer 31

If this is correct then the y intercept is 2 and the slope is 2 as well if it is reduced and the y=-2/4x+2 is the slope intercept form.

Answer 32

this is right, right?

Answer 33

y = -2/4x + 2 -- reduce any numbers that can be reduced
y = -1/2x + 2

y = mx + b -- slope is in m position, y int is in b position
y = -1/2x + 2
slope = -1/2
y int = 2

do you see now ?

Answer 34

oh I get it thanx!! :) Could you help me with other ones I am not 100% ready yet lol

Answer 35

sure

Answer 36

ok hold on I need to get back on my page because I lost it

Answer 37

just post it when your ready

Answer 38

3x - y = 14

slope-intercept form:

slope =

y-intercept =

Answer 39

I don't know how to do this is there is not number next to the y

Answer 40

when there is not a number...it is and implied number. That just means y is the same as 1y or x is the same as 1x........or -y is the same as -1y...get it ?

Answer 41

if it helps, put the number in there..
3x - 1y = 14

Answer 42

ok

Answer 43

so I subtract y from both sides? the problem is I don't know which side.

Answer 44

3x - 1y = 14.....we want -1y on one side and everything else on the other side.
so subtract 3x from both sides...or remember what I said earlier about adding/subtracting...if you want 3x moved to the other side, then move it and change the sign
3x - 1y = 14
-1y = -3x + 14

understand ?

Answer 45

ok let me try that

Answer 46

do I subtract 3x from 3x and from 1y or 14?

Answer 47

subtract 3x from both sides
3x - 1y = 14
3x - 3x - 1y = -3x + 14 -- combine like terms
-1y = -3x + 14 -- the 3x's on the left side cancel out

Answer 48

so now what?

Answer 49

do we divide?

Answer 50

now we have : -1y = -3x + 14 -- divide both sides by -1

Answer 51

Is this correct? : y=-3/-1x+-14?

Answer 52

correct.....but remember that a negative divided by a negative equals a positive
so it would be : y = 3x - 14

Answer 53

understand ?

Answer 54

so that is the slope intercept form?

Answer 55

yep..thats the slope intercept form

Answer 56

and in y = mx + b form, the slope is in the m position and the y intercept is in the b position. So can you tell me the slope and y int ?

Answer 57

y = mx + b
y = 3x - 14

slope(m) =
y int (b) =

Answer 58

slope is 3x?
and y int is -14?

Answer 59

slope is 3 and y int is -14

Answer 60

see..your getting this :)

Answer 61

ok ya I think I am getting it but, sometimes you can see that I do ask questions and get stuck

Answer 62

but, with you helping me I think I can improve little by little

Answer 63

its good to ask questions...it will help you learn

Answer 64

y = 4x + 10
slope(m) =
y int (b) =

Answer 65

thanks! :) I have an idea!

Answer 66

speak your mind :)

Answer 67

I have a collaborative chatroom and I can invite you to it if you want so that we could do it there

Answer 68

I have never been in the chat room on OS....how embarrassing I feel

Answer 69

lol it is a scribblar account I got it off of my school thingy I think it's called web2.0 tools

Answer 70

you want the link?

Answer 71

and its not on openstudy

Answer 72

crap...I am so sorry....I lost track of time...I have to go now. I will be back on later. I am soooo sorry

give me the link...please

Answer 73

ok http://www.scribblar.com/4321rx7t \
I hope you come back soon! :)

Answer 74

I will....I always do...lol
thanks for the link

Answer 75

when you are ready just pop in and I will hear a click when you do

Answer 76

Thanks for all your help and talk to you soon! :)

Answer 77

cool....sounds good....I will probably show up there a little later :)

Answer 78

ok Bye!

Answer 79

I don't know when you may get there but, if I am not there then I am sorry it must be too late I don't know how long I will wait but, today my teacher is coming

Answer 80

I hope you do well! :)

Answer 81

Can you help me with some I have right now while my teacher is not coming til 1 pm

Answer 82

Me?

Answer 83

ya I am working on slope intercept and it would really help if I had some extra help

Answer 84

It depends on what you need help with.

Answer 85

I probably can help with that

Answer 86

Slope intercept form is y = mx + b where m is the slope and b is the y-intercept. So in your equation, you have to solve for y.

Answer 87

-y=3x

Answer 88

slope-intercept form:

slope =

y-intercept =

Answer 89

^ the formula. It's correct

Answer 90

what?

Answer 91

Never mind. It posted slow. http://www.mathwarehouse.com/algebra/linear_equation/slope-of-a-line.php

Answer 92

ok I think I know enough to do this on my own so I am going to close the question. Thank you anyway! :)

Answer 93

Your welcome! I hope the best for you! :)

Answer 94

Thanks! :)

Answer 95

2x-8y=32
-2x -2x
-8y=32-2x

Answer 96

I'm your "fan" now :)