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BrizyBaby16
 3 years ago
What quadrant are the equations in?
A. 3x + 2y = 15
x  4y = 20
B. 10x  y = 30
x  y = 2
C. 2x  5y = 10
x + 2y = 10
D. 3x + y = 9
7x  7y = 14
BrizyBaby16
 3 years ago
What quadrant are the equations in? A. 3x + 2y = 15 x  4y = 20 B. 10x  y = 30 x  y = 2 C. 2x  5y = 10 x + 2y = 10 D. 3x + y = 9 7x  7y = 14

This Question is Closed

aminah.love18
 3 years ago
Best ResponseYou've already chosen the best response.1go there for some accuarate help

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4I don't have a library card #. That's not going to help me.

aminah.love18
 3 years ago
Best ResponseYou've already chosen the best response.1lemme know what happens

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4It worked but I don't see it helping me too much.

aminah.love18
 3 years ago
Best ResponseYou've already chosen the best response.1ok you shouldve pressed the math section

aminah.love18
 3 years ago
Best ResponseYou've already chosen the best response.1ok then you fill out the information on the bottom it shouldve let you type in your qestion

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4Would this be algebra I or II?

aminah.love18
 3 years ago
Best ResponseYou've already chosen the best response.1what are your choices

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4would it be graphing functions?

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4I just need to know how to graph them.

aminah.love18
 3 years ago
Best ResponseYou've already chosen the best response.1girl go the bottom of tha page and get a tutor a live tutor will help you out

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4I don't like that site.

aminah.love18
 3 years ago
Best ResponseYou've already chosen the best response.1lol ok then well their helpful i jsut uesd them rite now and they gave me the rite answer to everyting

keketsu
 3 years ago
Best ResponseYou've already chosen the best response.0Brizy, here's something else you can also try. Go to http://fooplot.com. It will graph the equations for you and you can see what quadrants they are in. You do have to solve for y first. So your first equation in A would be: 3x + 2y = 15 2y = 3x  15 y = (3/2)x  (15/2) Then you'd enter everything right of the "=" sign on that website. Hope that helps.

aminah.love18
 3 years ago
Best ResponseYou've already chosen the best response.1now thats coool im gonna try that

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4Yeah that seems complicated :(

aminah.love18
 3 years ago
Best ResponseYou've already chosen the best response.1my god girl you are hard to please

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4Lol I've herd that before :)

keketsu
 3 years ago
Best ResponseYou've already chosen the best response.0Haha. It does take some work, but that process should at least make it easier.

aminah.love18
 3 years ago
Best ResponseYou've already chosen the best response.1oh shadowfiend was here

aminah.love18
 3 years ago
Best ResponseYou've already chosen the best response.1have i metntioned you look wonderful today:)

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0BrizyBaby—the easiest way to answer these question is usually to graph them, honestly.

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4I don't know how to graph the equations....that's what I need help with.

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0Got it! Now we're at the heart of the problem :)

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0Let's start with A then. We have two equations: 3x + 2y = 15 x  4y = 20

aminah.love18
 3 years ago
Best ResponseYou've already chosen the best response.1well i give up nice meeting you thoug Brizzy

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4I need a easy way to know how to graph them.

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4You too aminah.love18

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0I find it easiest to graph equations when they're in y = mx + b (slopeintercept) form. So first things first, we try to solve the equations for y: \[\begin{align} 3x + 2y &= 15\\ 2y &= 3x  15\\ y &= \frac{3x  15}{2} = \frac{3}{2}x  \frac{15}{2} \end{align}\] And the other one: \[\begin{align} x  4y &= 20\\ 4y &= 20  x\\ y &= \frac{20  x}{4} = \frac{20}{4}  \frac{1}{4}x\\ y &= 5  \frac{1}{4}x = \frac{1}{4}x  5 \end{align}\]

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0So, we now have: y = 3/2 x  15/2 y = 1/4x  5 The first thing to notice is that both of these have a negative slope. Do you know what a negative slope means on a graph?

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4I don't get how you did the equations but yeah a negative slope goes down left to right.

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0Whoops. Sorry then, let's go back to that :) Let's start with 3x + 2y = 15. We're trying to solve for y. That means we need y alone. Remember that an equation doesn't change if we subtract the same thing from both sides. So first things first, we move the 3x to the right: 3x + 2y = 15 3x  3x + 2y = 15  3x Subtract 3x from both sides, 3x  3x is 0: 0 + 2y = 15  3x 2y = 15  3x (We leave off the 0.) Then we need to get rid of the 2. Dividing the same thing from both sides also leaves the equation unchanged, so we'll divide by 2: y = (15  3x) / 2 y = 15/2  3/2 x Does that make more sense?

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4yeah. So the points are 7.5 and 1.5?

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0Close! :) This means that the line is, like we said, going top left to bottom right. It means for every 3 units down that it goes, it goes two units to the right. And it means that it meets the y axis at 7.5. A quick, semiaccurate drawing: dw:1329863330467:dw

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4What did I get wrong?

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0So you can see here that that line is in quadrants II, III, and IV: dw:1329863470553:dw

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.01.5 isn't a point, it's the slope, that's all.

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4So, it's in the third Quadrant?

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0Well, that's what I'm not 100% clear on in the question. Obviously this line goes through three quadrants. Is the question asking which quadrant both lines are in or..?

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4Well does it mean what quadrant the slope is in?

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0Sorry > slope isn't really in a quadrant. It just tells you how the line moves from one position to another (i.e., what angle it's at).

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0It probably means what quadrant the two lines meet in, so let's look at the other line.

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0y = 1/4x  5 So we have a slope of 1/4, meaning for every one unit we go down, we move to the right 4 units. And 5 is the yintercept, which means the line meets the y axis at 5. Another rough drawing: dw:1329864223848:dw

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0If we put the two together: dw:1329864317169:dw

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0You can see there that they do in fact intersect in quadrant III.

BrizyBaby16
 3 years ago
Best ResponseYou've already chosen the best response.4So for A it's Quadrant III?

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0I would assume so. Again, the question isn't *super* clear, but I think that's what it's asking for.

shadowfiend
 3 years ago
Best ResponseYou've already chosen the best response.0Glad I could help :)
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