Question

hehlp

Answer 1

bruh

Answer 2

boi rlly

Answer 3

THIS IS 7 GRADE MATH TET

Answer 4

RLLY BRUH

Answer 5

nvm let me stop talking ;-;

Answer 6

Tet you're joking right now... this is a 7th grade standard. ;-;

Answer 7

tet..

Answer 8

oh

Answer 9

all you have to do is substitute the x for the answer choices and see which one's right

Answer 10

how i do that?

Answer 11

do you have a calculator? (preferably desmos)

Answer 12

no but you can a link 2 one

Answer 13

bruh. I can do this stuff in my sleep.

Answer 14

https://www.desmos.com/scientific

Answer 15

Mathway.com helps

Answer 16

what do i type in this calculator?

Answer 17

anyways go on the desmos and type in your equation

Answer 18

Desmos is reliable, just make sure it's not the scientific calculator.

Answer 19

that's exactly what i linked but alright, it;s been helpful to me

Answer 20

i typed it and nothing happened

Answer 21

ik hold up tet

Answer 22

i'm getting out the screenshots

Answer 23

not the screen shots :(

Answer 24

wat that means?

Answer 25

type it like that

Answer 26

click enter to go down

Answer 27

and make more spaces like i did

Answer 28

now, once you've done that type the values in the equation

Answer 29

(ex: 1,-4)

Answer 30

thats the answer? o ty

Answer 31

and try and make them equal the same thing

Answer 32

NO

Answer 33

it doesnt work when i put that thinggy in

Answer 34

alright just forget desmos

Answer 35

i was trying to show a quicker way to do it but i'll just tell you how to actually do it

Answer 36

Hey is everyone even reading the question? Doesn't it mention substituting the two equations together?

Answer 37

3x+7=-2x-3, correct?

Answer 38

OH

Answer 39

Don't spam this much please, and THANK YOU!

Answer 40

https://calcworkshop.com/systems-equations/substitution-method/

Answer 41

Alright, try reading that. It breaks down every step

Answer 42

There's a video in the article you can look at

Answer 43

i dont get it

Answer 44

yes

Answer 45

@lifewmylilweeb

Answer 46

nonono she ignores me

Answer 47

I think Flor is going to help you understand.

Answer 48

lol no i dont

Answer 49

we have got a system of equations which consists of \( \begin{cases}\color{tomato}{y}=\color{steelblue}{3x+7}\\\color{tomato}{y}=\color{pink}{-2x-3}\end{cases} \)

The point in a system is basically finding a relationship between two equations. In our case we know that they're both equal to y, so what \( x\) value can work for both equations? we can just plug

\( \begin{cases}\color{tomato}{y}=\color{steelblue}{3x+7}\\ \wedge \\ \ | \\ \ | \\ \ |\\ \boxed{\color{tomato}{y}}=\color{pink}{-2x-3}\end{cases} \)

therefore we get \(\color{steelblue}{3x+7}= \color{pink}{-2x-3} \)

solving it we get

\( =3x=-2x-10 \)
\(=5x=-10 \)
\( =x=\frac{-10}{5} =\boxed{-2} \)

Now that we have an \(x\) value you can pick either of the two equations, plug in \(-2\) for ix, and find the value of y, and then you will have your answer in the form of \( \ \ (x \ , \ y) \)

both of them will give the same value of \(y\). CAn you try it out?

Answer 50

Is this already answered?

Answer 51

no i dont really understand what im tryna solve

Answer 52

What math is this?

Answer 53

Okay, what do you know about linear equations tetsxpreme?

Answer 54

almost nothing

Answer 55

Okay well solving that question you must know what linear equations are first.

They consists in the form of:

\(\Large{y= \underbrace{m}_{slope}\cdot x+\underbrace{c}_{y -axis \ intersect }} \)

What you have in that system is two equations like this which are \(\color{tomato}{y}=\color{steelblue}{3x+7}\\\color{tomato}{y}=\color{pink}{-2x-3} \)

you can see in the first one we can see that \(\boxed{ m=3} \ \ \ \&\ \ \ \boxed{c=y} \)

that means we have a line with a slope of 3, and it intersects at 7 with the y-axis

Clear so far?

Answer 56

yes

Answer 57

Very good!

Now we have two of these lines which intercept with each other at a point with coordinates \( (x \ , \ y) \) but earlier we found out that \( x=-2 \) right?

so we have got \( (-2 \ , \ y) \)

now, to find the \(y\) value just use \(-2\) for \(x\) in either of the two equations and you will have an answer.

Answer 58

wait whats y?

Answer 59

a coordinate

what you're trying to find

Answer 60

how i find it?

Answer 61

I just explained it to you in the previous reply

Are you sure you're reading what I am saying?

Answer 62

yea im reading it, its just a bit confusing sorry

Answer 63

use \(-2\) as \(x\) for either of these

\(\color{tomato}{y}=\color{steelblue}{3x+7}\\\color{tomato}{y}=\color{pink}{-2x-3}
\)

Answer 64

so you would have

\(\color{tomato}{y}=\color{steelblue}{3 \cdot( -2)+7}\\\color{tomato}{y}=\color{pink}{-2\cdot(-2)-3}\)

pick either one

Answer 65

pick either one to solve ?

Answer 66

yes

They both would give you the same results

Answer 67

i honestly dont know how to solve it

Answer 68

Okay at this point there's nothing I can do that's like the most basic thing one should know

maybe do a little research on multiplying and addition on the internet okay :)

Answer 69

i mean i can but whats the (-2) ik it goes first but idk where do i put it

Answer 70

okay there are 4 rules in multiplying

\((-) \cdot (-) = (+)\)

\((-) \cdot (+) = (-)\)

\((+) \cdot (-) = (-)\)

\((+) \cdot (+) = (+)\)

Answer 71

whats that dot?

Answer 72

multiplying symbol same as "\(\times\)"

Answer 73

i thought it was *

Answer 74

is it 4?

Answer 75

y=3⋅(−2)+7
3x(-2)+7
right?

Answer 76

Yea, that would be

\(y=3\cdot(−2)+7\)

\(y=-6+7\) remember \((+) \cdot (-) = (-)\)

\(y=....\)

Answer 77

so the answer is gonna be a - no matter what

Answer 78

no that is to explain how we got negative \(6\)

Answer 79

so -1? or 1?

Answer 80

what is \(−6+7 =y \) or an alternative form \( 7-6=y \)

Answer 81

1

Answer 82

yeah, so we have \( (-2 \ , \ 1 ) \)

Answer 83

ohh thank youu sorry for taking so long