Question

Simple Equation Involving x and y :

\[\frac{y-1}{ x+3 } =-\frac{ 3 }{ 4 }\]

Answer 1

@wolf1728

Answer 2

someone please explain step by step

Answer 3

well now..
solve them independently

Answer 4

what is
y - 1 = 3

Answer 5

and what is
x+1 = 4

Answer 6

I mean, can i just do the cross muliplying
?

Answer 7

why would you cross multiply? you're not doing a proportion
you're solving for possible values of x and y

Answer 8

\[(y-1)*4=-3*(x+3)\]

Answer 9

go ahead

Answer 10

:/ mmm so...

Answer 11

that should give you a distributive property on the left and on the right side of the equation
try solving it with your method

Answer 12

i guess is wrong already, what do i have to do, please i can't fail on this one

Answer 13

do you have ten fingers?

Answer 14

ahh ?
i guess is a JK thing of yours

Answer 15

I want to know if you have ten fingers, because I don't want to assume that you do

Answer 16

hey dude, i doin on't have a lot of time like you think so, so I'm going to solve in the way i told you

Answer 17

okay then do it your way I was going to show you a trick that you can base your future algebra problems with

Answer 18

if you don't have ten fingers just tell me, I won't judge you

Answer 19

\[4y-4 = -3x-9\]

Answer 20

did it help you solve for x and y?

Answer 21

you're doing an equation, where is that solution going to lead you?

Answer 22

to nowhere

Answer 23

exactly

Answer 24

we're going to try to solve for y
put three fingers up

Answer 25

maybe a function thing..

Answer 26

just put three fingers up

Answer 27

lol go ahead

Answer 28

okay it says
y - 1 = 3

with your three fingers up, that is your right hand side of the equation
now on the left hand side it says y - 1 how about you add 1 to find out how many you had before one was deducted

Answer 29

done?

Answer 30

now you know how the mechanism is done, let me lay it out for you

y - 1 = 3 //add 1 to both sides of the equation

y -1 + 1 = 3 + 1 //the left hand side becomes y because -1 + 1 becomes zero
y + 0 = 4 // finalize
y = 4

do the same thing with the x in the denominator and tell me what you got

Answer 31

i have to describe every step

Answer 32

what kind of property is that ?

Answer 33

i need t

Answer 34

to inform! please come back dude. please help me out

Answer 35

http://coolmath.com/prealgebra/06-properties/07-properties-additive-inverse-01.htm

Answer 36

it applies to variables too

Answer 37

I know that !
what i was saying is related with the whole approach in the equation

Answer 38

it has no specific name like cross multiplication

Answer 39

I'm going to trust in you,but if i fail, iLL be screwed..

Answer 40

you won't
how about you tell me what you got for x?

Answer 41

because we are not done yet

Answer 42

x=1

Answer 43

okay plug those into the original equation
but you will notice that the right hand side is a negative

Answer 44

yes...

Answer 45

the rule is that for a fraction to be negative, either the numerator or denominator has to be negative

Answer 46

so let us tweak either the numerator or denominator. you pick which would you like to be the negative on the right hand side

Answer 47

I didn't know that i can solve the equation in this way, hope is right

Answer 48

y/x = -4 ?

Answer 49

doesn't make sense for me

Answer 50

\[\frac{y-1}{ x+3 } =-\frac{ 3 }{ 4 }\]

Answer 51

4y=−3x−5, \[y =-\frac{ 3x }{ 4 }-\frac{ 5 }{ 4 }\]

Answer 52

no

Answer 53

just pick if you want the numerator or the denominator on the right side to be negative

Answer 54

dude thanks anyway...

Answer 55

okay