Question

Plz help! medal to best answer
The graph below represents which system of inequalities?
I have a pic of the graph-

Answer 1

i cant see it

Answer 2

Me either

Answer 3

its magic

Answer 4

its invisible

Answer 5

haha wait ill post it in a sec

Answer 6

do u know the diference between dash and solid line

Answer 7

does it tell you what systems of inequalities it refers to specifically, like a multiple choice, or is this an open ended question?

Answer 8

A. y > 2x - 3
y > -x - 3
B. y < 2x - 2
y < -x + 3
C. y less than or greater to 2x - 2
y > -x + 3
D. None of the above

Answer 9

@Adi3 yes

Answer 10

@theschroedingercat do u think u know the answer? if so can u explain it to me

Answer 11

@Adi3 i really need help on this one can u help?

Answer 12

@iGreen

Answer 13

well, it is going to be 2 equations where one has an inequality associated with a solid line, and one has an inequality associated with a dotted line. which type of inequality symbol goes with a dotted line, and which with a solid? Since you have 2 different type of symbols, it automatically eliminates A and B.

Answer 14

@misty1212 can u help him he really needs help

Answer 15

ok

Answer 16

now, one slope is going up to the right and down to the left. This is what positive slopes do. The other has a slope going down to the right and up to the left. This is what negative slopes do.

Answer 17

you can look at those 2 facts and then plug in a set of numbers for each one, like x = 1. Then see where your answer to the equation would be.

Answer 18

Actually i kinda forgot this stuff i did it last year sorry

Answer 19

so what do you think a solid line would represent? and if you can figure that one out, it gives you what a dotted line is automatically.

Answer 20

this sign < and > go with a dotted line @theschroedingercat

Answer 21

am i right?

Answer 22

^^^

Answer 23

@iGreen do u think u can help me with a q plz

Answer 24

@ganeshie8

Answer 25

sorry i had to read a book to someone. Yep youre right, dotted line goes with > and <.

Answer 26

so when you plug in a number for X on the one equation you have left (since you just eliminated A and B as answers!) does it look like the answer goes on the shaded side of the equation?

Answer 27

ok good what next?

Answer 28

it looks like it is shaded below the line, and the below sings are < < or = to

Answer 29

Sorry <, or <or = to

Answer 30

so would it be C?

Answer 31

@theschroedingercat @iGreen

Answer 32

What do you think? It seems like that is the right answer, just by looking at it and using some logic. You can verify it by solving them to get the intercept. Do you know how to do that?

Answer 33

no could u help me?

Answer 34

Well, if we assume C is the answer.. we look at \[y \le 2x -2\]. So we can make a graph of it by plugging a few random numbers in for X and thens olving the equation to get the paired coordinate. so X = 0, Y = -2 (y intercept). Then X = 1, y = ?. \[y \le 2(1) - 2\]

Answer 35

the answer for that is 2 - 2 = 0, so your first coordinate is 0, -2 and your second is 1, 0. Does that seem to match the one that is the solid line?

Answer 36

Repeat the process for \[y > -x + 3\], knowing from your experiment with the first one that the +3 is the Y intercept, or where the dashed line will strike the Y axis. try to solve that one for one more point, and draw a line.. see what you get!

Answer 37

yep! so that means are answer is right! right haha? :)

Answer 38

have you checked the second line? Math teachers have been known to be devious when it comes to giving you the correct stuff for the first part of an equation and the wrong stuff for the second part, just to see if you are being thorough. :D

Answer 39

you are almost there, if you solve \[y > -x +3\] for one more point, and graph the line out, you will know the answer.. plus you figured it out yourself! i just asked you alot of annoying questions :D

Answer 40

did you get it? I hope so. I have to go take my son to the library. Good luck!!

Answer 41

hah ok thx! :) and yes i got it

Answer 42

thx for all you help i really appreciate it!!

Answer 43

so its not C right just to make sure

Answer 44

cause i did the graph

Answer 45

@iGreen can u check my answer plz

Answer 46

@texaschic101 can u just check my aswer for me plz

Answer 47

What answer did you choose?

Answer 48

I chose D

Answer 49

But i think the other guy was going twords C but im not sure who is right

Answer 50

Nope, D is incorrect..

Answer 51

ok So it is C! thx for you help guys :) @iGreen and @texaschic101 for helping check my answer !

Answer 52

Yep, you got it.

Answer 53

sorry i had to leave, glad you got it :)