anonymous
  • anonymous
NEED HELP FAST! I WILL GIVE MEDAL AND FAN!! Write the equation of the line that is parallel to the line 3x - y = -3 and passes through the point (4, -2).
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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hartnn
  • hartnn
what have you tried? :)
hartnn
  • hartnn
could you find the slope of 3x - y = -3 ?
Pawanyadav
  • Pawanyadav
Slope of line must be 3. y=3x+3 Comparwith y=mx+c

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More answers

Pawanyadav
  • Pawanyadav
Let eq be y=3x+c Find c by satisfying the equation with (4,-2) Then put value of c in above equation you will get the answer.
Pawanyadav
  • Pawanyadav
Slope of line must be 3. y=3x+3 Comparwith y=mx+c
anonymous
  • anonymous
So i have to change the equation to y=mx+b?
Pawanyadav
  • Pawanyadav
Yes
anonymous
  • anonymous
so it would be y=3x-3?
Pawanyadav
  • Pawanyadav
Y=3x+3
anonymous
  • anonymous
in the answer choices they're looking for a fraction in the equation
hartnn
  • hartnn
you got how the slope is 3 ?
anonymous
  • anonymous
yes i get that part
anonymous
  • anonymous
becaus b= slope in y=mx+b
hartnn
  • hartnn
yes, so your answer will be of the form y - 3x +c now we have the point 4,-2 plug in x= 4, y= -2 in that
hartnn
  • hartnn
in y= 3x+c **
Pawanyadav
  • Pawanyadav
No m is the slope .
anonymous
  • anonymous
-2 = 3*4 + c
Pawanyadav
  • Pawanyadav
b is the point where the line cuts the y-axis
anonymous
  • anonymous
yes the y-intercept sorry i got confused for a second i realize that now thank you
hartnn
  • hartnn
-2 = 3*4 + c yes thats right, now what is c ?
anonymous
  • anonymous
3?
Pawanyadav
  • Pawanyadav
Welcome, now solve other part carefully.
hartnn
  • hartnn
how? -2 = 12 +c subtract 12 from both sides to get c
anonymous
  • anonymous
-14 = c
anonymous
  • anonymous
-2 =3*4 -14
hartnn
  • hartnn
yes, so your equation as of now is y = 3x -14 right ? now what are your choices?
anonymous
  • anonymous
no right now i have -2 = 3*4 - 14
hartnn
  • hartnn
we had y = mx +c the slope we got , m = 3 so we were y= 3x +c. now we need to just find the "c" part. for which we used the given point. and got c = -14
hartnn
  • hartnn
and if we plug c in y = 3x+c, we get y = 3x -14 :)
anonymous
  • anonymous
yes! but the answer choiches all have fractions in them
anonymous
  • anonymous
nevermind
anonymous
  • anonymous
that is correct thanks so much for your help!
hartnn
  • hartnn
most welcome ^_^ hallp to help :)
hartnn
  • hartnn
*happy

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