Question

Select the equations that are parallel and perpendicular to y = one over fourx + 7 and that pass through the point (-8, 9).

parallel: y = one over fourx - 11
perpendicular: y = -4x + 23

parallel: y = -4x + 11
perpendicular: y = one over fourx - 4

parallel: y = 4x - 7
perpendicular: y = negative one over fourx - 7

parallel: y = one over fourx + 11
perpendicular: y = -4x - 23

Answer 1

y = 1/4x +7?

Answer 2

I meant is that what you mean. And I think it is.

Answer 3

Yes, this is what I mean.

Answer 4

If it is, it's the first one, since parallel lines share slopes, and the slopes of perpendicular lines are the negative reciprocals. So, for instance, y = x + 2 is parallel to y = x + 5, and y = 2x + 2 is perpendicular to y = -x/2 + 3

Answer 5

oh wait... just a second...

Answer 6

ok

Answer 7

y = 2x+2 would be perpendicular to y = -1/2x + 3 (from my example). But yeah, it's the first one.

Answer 8

Are you positive? :-)

Answer 9

parallel: y = 1/4x - 11
perpendicular: y = -4x + 23

Answer 10

I'm sure :3

Answer 11

Oh wait...

Answer 12

Thank you for your help...

Answer 13

I just noticed that they have to pass through a certain point

Answer 14

ok

Answer 15

Let me graph them, because it can be either A or D.

Answer 16

Ok...I'll wait. ^v^

Answer 17

It's the last one. Sorry about that :p

Answer 18

It's fine. The answer is D.:

parallel: y = 1/4x + 11
perpendicular: y = -4x - 23

Answer 19

Yup :3

Answer 20

Alright, I'm trusting you! Thank your for the help, would you mind helping me w/ another problem? :3

Answer 21

Sure.

Answer 22

Ok. Here: Alex stores fertilizer for his farm in a rectangular box. The length of the box is 6 feet, width is 3 inches, and height is 9 inches. Each bag of fertilizer contains 0.225 cubic foot of fertilizer. How many bags of fertilizer will fill the box completely?

[1 foot = 12 inches]

Answer 23

Oh geez, volume questions. Just a second...

Answer 24

ok

Answer 25

Lol, I forgot how to do one of the easiest things. Anyway, it looks like you can fit 720 bags of fertilizer in there, but that might be a tad bit off. So, let's call @OrangeMaster in here to see if I'm right.

Answer 26

ok :)

Answer 27

Or maybe @dmezzullo

Answer 28

Seems like no one's coming >.>

Answer 29

Hold on

Answer 30

K. Trying to get someone in here atm.

Answer 31

@e.mccormick May we have some assistance?

Answer 32

@bibby may we have some help

Answer 33

Yay! Bibby! :D

Answer 34

@bibby is 720 correct?

Answer 35

Use unit cancellation.

Answer 36

lemme get ms paint

Answer 37

ok

Answer 38

nm

Answer 39

uhh does this help?

Answer 40

bibby, the 6 is 6 feet.

Answer 41

kill me

Answer 42

k. \kill @bibby

Answer 43

So...how would I solve this problem?

Answer 44

fixed. still do we just divide 1944 by the number in the bottom?

Answer 45

I did and got 5. 5 bags are required to fill it

Answer 46

Oh. Well holy crap I was way off.

Answer 47

Haven't messed around with volume in a few years. Sorry about that.

Answer 48

Yeah. I hope you never try helping anyone again. Go back to school you pathetic nerd

Answer 49

You're positive it's 5 bags?

Answer 50

XD

Answer 51

I'll cut myself with a plastic knife if it isn't

Answer 52

ooooohhhhh...that would hurt.

Answer 53

@bibby pls
720 did seem like a tad bit much though. @Grama-Pimpsta, just try it :p

Answer 54

ok thank you for your help

Answer 55

It's more important that you get the idea of unit cancellation. For ever cubic foot there are 1728 cubic inches because 12*12*12

Answer 56

ok I do understand

Answer 57

I will try saying the answer is 5, right? just making sure.

Answer 58

Don't try lol. Work out the math and make sure you get how I got my answer

Answer 59

alright , don't go anywhere yet. I'm going to check it out.

Answer 60

You don't own me. I'pm gonna go get sour candy and water brb

Answer 61

lol ok XD

Answer 62

...alright, I don't see how you got 5 bags of fertilizer as your answer. Would you mind showing me how you got that step by step? :(

Answer 63

k. unit cancellation is something I learned in chemistry. basically you set up proportions so that you can be sure you're using the right numbers and units. for example:

Answer 64

Hold on a sec, stupid thing isn't working.

Answer 65

yeah I'm gonna attach it in 5 seconds hold up

Answer 66

Ok.

Answer 67

Ok, so you have right now 36 inches and 576 inches.

Answer 68

hello

Answer 69

are you talkign about your problem?

Answer 70

The volume is 72*3*9 because the 6 was in feet. as such I converted it to inches

Answer 71

no, no. Those are the numbers you got on the attachment you sent me.

Answer 72

OH 0___0 duh. Ok, 72 x 3 x 9

Answer 73

That's...1,944 like you said.

Answer 74

Yeah those were just different examples with different numbers to demonstrate a concept.

exactly. So now you know that your cube of whatever we're filling is 1944 cubic inches.

Now we have to get the bag of whatever into cubic inches too

Answer 75

Ok, so .225 cubic feet = ft^3 x ft^3 x ft^3 cancels out. .225 times 12?

Answer 76

I get 2.7.

Answer 77

@bibby

Answer 78

@poopsiedoodle how did you do it?

Answer 79

0.225 * 12 * 12 * 12 = 388.8 mate

Answer 80

Probably the wrong way. 1994/2.7, except this time, I got 738. I don't know what I'm doing. Lol.

Answer 81

btw I got suspended apologies.

Answer 82

you were suspended for the following reason: Never tell anyone on OS that their best choice is some form of suicide
#owned

Answer 83

Parallel is y=1/4x + 8 Pendic. is y=4x + 41

Answer 84

I know, I'm asking why @bibby got 5 bags in the second equation. :/

Answer 85

That's wrong anyways.

Answer 86

You divide it out. You have the original case. and you want to see how many bags itll take to completely fill it up

Answer 87

oh okay just helping ight then

Answer 88

How would I do it? I just need help solving it, I don't really understand. @spurdo

Answer 89

Ok let's take the dimensions out of it. Let's say you have a line sized 10 units and you have a bunch of 2 unit sized pieces. How many pieces would it take to cover the line?

Answer 90

8?

Answer 91

Wait, all I do is divide 1,944 by 388.8 and I get 5 ok. I see how @bibby got it.

Answer 92

uhhhhhh mate you gotta go back to kindergarten

divide.

Answer 93

5 sorry, thinking of subtraction.

Answer 94

Division is technically logarithmic subtraction