Question

someone help me with some inequalities?

Answer 1

@ranga

Answer 2

anybody? for a medal?

Answer 3

please!

Answer 4

What's the question?

Answer 5

Which inequality matches the graph?



-2x + 3y > 7

2x - 3y < 7

-3x + 2y ≥ 7

3x - 2y ≤ 7

Answer 6

i dont know how to screenshot the graph

Answer 7

You can attach file

Answer 8

okay hold on

Answer 9

Oh like you don't know how to take a pic of your screen?

Answer 10

yeah

Answer 11

Mac or windows?

Answer 12

mac

Answer 13

Press command + shift + 3 to take the image of your screen

Answer 14

And then you can upload it, but you can edit it on paint or something to remove anything important on your screen, don't upload anything you value.

Answer 15

got it! le tme just attach it

Answer 16

did it(=

Answer 17

Cool, so have you tried anything yet?

Answer 18

well i know it is eather B or D because it is a solid line right?

Answer 19

its just whn i convert it to slope intercept form to graph it, it has fractions and i suck at graphing fractions

Answer 20

Actually you can just conclude what it is by looking at C or D, because it's a solid line as you mentioned.

Answer 21

oh yeah i meant C or D. and what do you mean? how can i tell which one between C and D?

Answer 22

Do you know how to graph -3x+2y = 7?

Answer 23

yes. you change it to slope intercept form which would be y=-3/2x+7/2

Answer 24

Not quite, that would not give you the specific graph.

Answer 25

oh then thats what ive been doing wrong with this problem

Answer 26

@lyndsaysturgeon I think you forgot to change the sign when you added 3x to both sides.

Answer 27

Yup!

Answer 28

@lyndsaysturgeon now since you have the mistake figured out, any idea how to graph the inequality?

Answer 29

i thought you only changed signs when you divide by a negative number

Answer 30

Not the inequality, in the algebra, you have -3/2x instead of 3/2x

Answer 31

That's why you were getting the wrong graph

Answer 32

ohh okay so i forgot to make it positive? so now i have this y=3/2x+7/2

Answer 33

Yes, now do you mind drawing both the graphs and then getting back to me with your answer?

Answer 34

well how do i plot the y intercept point of 7/2? thats the other art i think i keep messing up

Answer 35

7/2 = 3.5 a good way to remember these I guess would be to think of it this way, 1/2 = .5, 3/2 = 1.5, 5/2 = 2.5, 7/2 = 3.5, see the pattern?

Answer 36

Or you can always divide normally

Answer 37

okay so would the answer be d? because the y intercept is a negative 3.5?

Answer 38

Yup :P

Answer 39

thank! can you tell me if i got another one right?

Answer 40

Sure

Answer 41

okay hold on

Answer 42

Just be careful with these problems, go slow, because it's very easy to make mistakes. Especially as you found out with the algebra :d

Answer 43

is this correct?

Answer 44

Yup!

Answer 45

Good job :)

Answer 46

YAY thank you so much!!

Answer 47

Np