sammy5592
–3x + 2y = 8
change to slope intercept form show all steps.
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Bidoof
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Slope intercept form is y=mx+b
Step 1: Isolate the term with the y variable
sammy5592
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2y=11
Bidoof
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You can't combine 3x and 8 because 3x has a variable and 8 doesn't
sammy5592
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ok so?
Bidoof
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It will be 2y=3x+8, but you still have to remove the number attached to y by dividing both sides by that number
sammy5592
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how do you do that
sammy5592
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@hal_stirrup
sammy5592
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can you help
?
hal_stirrup
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Don't you know how to manipulate equations ?
sammy5592
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no
hal_stirrup
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then you should go back to basic equations and practice that so you can get this. dont build a house of card . solid maths foundation is key.
Bidoof
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You need to divide both sides by 2 to remove the 2 that is with the y variable
If it was a fraction, you would multiply by the denominator to cancel it out
Bidoof
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For the other side, simply divide both terms by 2 to get your answer.
sammy5592
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2y=3x+8 3x 4y ??
hal_stirrup
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ok . lets say y/2=x solve for x? what operator do you need to use?
sammy5592
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idkk :(
hal_stirrup
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think about it.
sammy5592
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divide?
hal_stirrup
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divide what?
sammy5592
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y and 2?
hal_stirrup
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nop
sammy5592
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dammit
hal_stirrup
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ok if i say to you make y/2 to y what do you have to do. note that y/2 is really \[y\frac{ 1 }{ 2 }\]
sammy5592
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darn idk
sammy5592
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Sh!+
hal_stirrup
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its easy . trust me. ;)
sammy5592
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Can you just please give me the answer? this is the last question.
hal_stirrup
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no sorry NOT allowed . website rules.
sammy5592
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rules are mint to be broken
sammy5592
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JK
hal_stirrup
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no not here and not for me.
abigail2010
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Alright sounds like people are harsh over here. The slope formula is mx+b=y
So thus you need to get the equation above like it..
-3x+2y=8
First, I would add 3x to both sides. So it's like 3x+(-3x) +2y = 8 -3x, the 3x's on the left will cancel. So you will get 2y = 8-3x.
So now it's almost in the mx + b =y form you have have the extra 2 in the 2y
So now you need to divide both equations by 2 to eliminate the 2y.
Thus it would be like... 2y/2 = 8-3x/2 or you can write it like y = 8/2-3x/2... finally the 8/2 can be reduced to 4
SO finally the answer would be...
y = 4 - 3/2x
abigail2010
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actually time out let me fix that.. it won't be -3/2x it should be +3/2x
it will actually be y = 4 + 3/2x
sammy5592
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Thank you very much
abigail2010
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You're welcome!