Question

(can someone please help me :( )

Solve each system by graphing. Check your answers.

5. y = -x + 4
y + 3x + 12

Answer 1

Graphing? allowed to use a graphing calculator, correct?

Answer 2

yes

Answer 3

Haha. Then it's too easy.

Make sure both lines have an isolated y so the first one is done.

the 2nd one should be y=-3x+12

plug those 2 equations into
https://www.desmos.com/calculator

solution: 4,0

Answer 4

The solution (if there is one) to 2 linear equations, is the same as the point where the 2 lines intersect.

Answer 5

wait so the answer will be 4,0? :o @dtan5457

Answer 6

actually wait up. the 2nd one is y + 3x + 12=0?

Answer 7

if so then the 2nd line should actually be y=-3x-12 the solution is -8,12 sorry. read it wrong.

Answer 8

oh wait, it's y= 3x + 12 @dtan5457

Answer 9

LOL. then we were all wrong. it'll be -2,6. final answer<<

Answer 10

i was wondering how a linear equation would be y+3x+12..

Answer 11

ohhh! yay! :) can you please please please! help me with a few more? I'm stressing over here @dtan5457

Answer 12

go ahead.

Answer 13

yay! thank you! you are like a life saver

Answer 14

11. Describe the graph of a system of equations that has no solution

Answer 15

they will never intersect ^^

Answer 16

anything else?

Answer 17

yess :3

Answer 18

no problem. ask away

Answer 19

yay okay. let me type it ^_^

Answer 20

-x + y = -13
3x - y = 19

Answer 21

solve it graphically, again?

Answer 22

yes ^_^

Answer 23

anytime you solve a system graphically literally the only work you have to do is isolate y.

-x + y = -13
add the x so y=-13+x

3x - y = 19
subtract the 3x
-y=19-3x, negative y so negate everything to y=-19+3x

plug that in your calculator or https://www.desmos.com/calculator

intersects at 3,-10<<<your solution

Answer 24

questions? more problems?

Answer 25

yesss :o if that's okay. am I bother you?

Answer 26

not really, as long as your learning it too.

Answer 27

I am ! but I still need helpp with it and you're doing it :). I tend to forget things something :(

Answer 28

like I'm really suckish at math

Answer 29

and im trying to boost my grade up before the semester is over cause it's like literally almost over

Answer 30

don't worry i feel you. how many problems you got left? if you only got a few i'll guide you through them so you can learn them properly

Answer 31

\[\frac{ 1 }{ 3 }y = \frac{ 7 }{ 3 }x + \frac{ 5 }{ 3 }\]

x - 3y = 5

Answer 32

hold on. let me see how much left

Answer 33

4 more left

Answer 34

alright look it's the same thing i said before, isolate y. are you able to do that for these equations

Answer 35

I think but can you tell me how again? like I get it but I don't get it :/

Answer 36

(sorry if I'm annoying D: )

Answer 37

you have to make y literally just y=........etc etc

1/3y=7/3x+5/3

Answer 38

you have 1/3 y how can you make it just y

Answer 39

for solving any system you must get that concept

Answer 40

multiply everything by 3 lol

Answer 41

hold on, I'm looking back and forth

Answer 42

ohhh

Answer 43

tell me what you get

Answer 44

are you having trouble with this

Answer 45

maybe ... ._.

Answer 46

omg IM SO STUPID :( IM SORRY

Answer 47

LOL it's ok i failed plenty of math tests this year

Answer 48

yeah but I really need to get this done or I'm going to fail my math class :(

Answer 49

like my whole math class

Answer 50

Imma cry

Answer 51

*starts to hyperventilate*

Answer 52

if you multiply it by 3 you get y=7x+5

Answer 53

but what am I multiplyingg D: I forgottt!

Answer 54

well look if you have 1/3y you wanna get 1y basically

you gonna multiply by 3 cause 1/3 times 3/1=3

Answer 55

i think your thinking too hard

Answer 56

I think I am! all I can think about is getting these assessments done so I can stop stressing and breathe!

Answer 57

wait so what am I doing with y= 7x + 5? putting it in Desmos?

Answer 58

*faints*

Answer 59

yep. the 2nd one is
x - 3y = 5

isolating y is -3y=5-x

divide by -3

y=-5/3+x/3

Answer 60

put that in the calculator and tell me where it intersects

Answer 61

I got 0, 5??? o.o

Answer 62

you typed it in wrong

Answer 63

if anything you have to type it in correctly

Answer 64

ughhh sfgvkjcnfdjvfkmredsjc,fdcmk

Answer 65

how do I type it in right?

Answer 66

y=-5/3+x/3

Answer 67

y=7x+5

Answer 68

you know what i mean

Answer 69

5,0 ? here let me show you how I typed it

Answer 70

@dtan5457

Answer 71

yea that looks right

Answer 72

now do the other one

Answer 73

so the answer is 5, 0?

Answer 74

according to my calculator its -1,-2

Answer 75

how did u get 5,0

Answer 76

-_-

Answer 77

I don't knoww! D:

Answer 78

how do you see where the answer is?

Answer 79

wait...

Answer 80

yeah I'm lost. where did you find the answer <__>

Answer 81

where it look like it intersect

Answer 82

wasup

Answer 83

<_> ._. >_> :( oh

Answer 84

I'll write this all down in my notepads so I can remember as we go on

Answer 85

awesome next question

Answer 86

if they let you use a graphing calculator there should be no reason to get this wrong

Answer 87

they do but like I don't have oneeee D: and I do online school :(

Answer 88

online school? that exists?

Answer 89

okay let me get the next question

Answer 90

17. 3x + y = -13
-2x + 5y = 054

Answer 91

and yes they exist

Answer 92

and I have a math assessment that's dued tonight >___> which is the one that we are doing <_< that you are helping me with >_> which I'm happy for cause otherwise I'll be crying

Answer 93

-2x + 5y = 054

typo or nah

Answer 94

is it 54?

Answer 95

oops