iwanttogotostanford
  • iwanttogotostanford
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Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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iwanttogotostanford
  • iwanttogotostanford
@triciaal
DanJS
  • DanJS
well if you divide a degree 2 by a a degree 1 function, looks like you will get a degree 2-1 function, a line
DanJS
  • DanJS
factor the polynomial, an you see the denominator is then gone but you have to keep track that that can not be 0, or x cant equal -4

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iwanttogotostanford
  • iwanttogotostanford
would y be -1 or -9 ? @danjs
Pawanyadav
  • Pawanyadav
You will get after factorization (x+5)(x+4)/(x+4) =(x+5) So you get y=x+5 Can you plot it
iwanttogotostanford
  • iwanttogotostanford
ok, but would my coordinates be (4,-9) or (4,-1)
iwanttogotostanford
  • iwanttogotostanford
@Pawanyadav
Pawanyadav
  • Pawanyadav
(4,9) Plug x=4 Then y=x+6=4+5=9 So (4,9)
Pawanyadav
  • Pawanyadav
That was 5 not 6
iwanttogotostanford
  • iwanttogotostanford
thats not one of the choices though there has to be a negative in there
Pawanyadav
  • Pawanyadav
Can you show me the choices
Pawanyadav
  • Pawanyadav
Are you there
triciaal
  • triciaal
|dw:1449414289123:dw|
triciaal
  • triciaal
|dw:1449414485675:dw|
iwanttogotostanford
  • iwanttogotostanford
@triciaal so would x be 4??
iwanttogotostanford
  • iwanttogotostanford
would y be -1 or -9? it has to be one of the two:-) @triciaal
iwanttogotostanford
  • iwanttogotostanford
@zepdrix @pooja195
iwanttogotostanford
  • iwanttogotostanford
I just need confirmation on the coordinats
iwanttogotostanford
  • iwanttogotostanford
@radar
iwanttogotostanford
  • iwanttogotostanford
@secret66 @Pawanyadav
Pawanyadav
  • Pawanyadav
It can't be one of them
Pawanyadav
  • Pawanyadav
Would be better if show the choices
iwanttogotostanford
  • iwanttogotostanford
ok sure
iwanttogotostanford
  • iwanttogotostanford
well the choices are graphs but the coordinate choices are as follows: (-4,1),(4,-1),(-4,9), and (4,-9) @Pawanyadav
iwanttogotostanford
  • iwanttogotostanford
the point coordinates of course
Pawanyadav
  • Pawanyadav
Can't be anyone of following choice Should be (4,9) As y=x+5
iwanttogotostanford
  • iwanttogotostanford
the question says: what is the graph of the function: x^2+9x+20/x+4
iwanttogotostanford
  • iwanttogotostanford
@Pawanyadav
iwanttogotostanford
  • iwanttogotostanford
@Pawanyadav please help
Pawanyadav
  • Pawanyadav
After solving it we get. y=x+5 .right?
iwanttogotostanford
  • iwanttogotostanford
ys, i think
Pawanyadav
  • Pawanyadav
So it is a linear equation so It's graph represents a straight line
iwanttogotostanford
  • iwanttogotostanford
yes
Pawanyadav
  • Pawanyadav
Than what's the problem
iwanttogotostanford
  • iwanttogotostanford
well the answer you gave me isn't a choice
Pawanyadav
  • Pawanyadav
The choices are not correct, simple
iwanttogotostanford
  • iwanttogotostanford
well if you had to pick on ewhihch would it be because i have to pick out of these answers unfortunatley
iwanttogotostanford
  • iwanttogotostanford
i really need help picking one, I'm not sure either
iwanttogotostanford
  • iwanttogotostanford
@Pawanyadav
Pawanyadav
  • Pawanyadav
What will happen if you don't pick anyone
iwanttogotostanford
  • iwanttogotostanford
i will get it marked wrong which i don't want
Pawanyadav
  • Pawanyadav
Pick anyone of them will also marked wrong
Pawanyadav
  • Pawanyadav
If it's compulsory than pick A
iwanttogotostanford
  • iwanttogotostanford
the point at -4,1?
Pawanyadav
  • Pawanyadav
(Yes
iwanttogotostanford
  • iwanttogotostanford
ok, thanks! @DanJS what do you think?
DanJS
  • DanJS
just got to the bottom here
DanJS
  • DanJS
well the choices are graphs but the coordinate choices are as follows: (-4,1),(4,-1),(-4,9), and (4,-9 it is the one where the y coord is the x-coord plus 5, [y=x+5] 1 = -4 + 5 , that point is on the graph
iwanttogotostanford
  • iwanttogotostanford
so which coordinate would it be ? please I've been working on this problem for os long
DanJS
  • DanJS
and there is a hole discontinuity at x=-4
iwanttogotostanford
  • iwanttogotostanford
which coordinate for the point on the graph would it be again? please:-) @DanJS
iwanttogotostanford
  • iwanttogotostanford
so it would be C or D?
Pawanyadav
  • Pawanyadav
Can I go now
iwanttogotostanford
  • iwanttogotostanford
yeah lol
iwanttogotostanford
  • iwanttogotostanford
@DanJS
iwanttogotostanford
  • iwanttogotostanford
hello ? @DanJS
iwanttogotostanford
  • iwanttogotostanford
i need to o now f you could tell me the answer that would be amazing I'm sorry i need to go but really need help please
iwanttogotostanford
  • iwanttogotostanford
i really need the answer :-) but i need to go please help
DanJS
  • DanJS
man sorry i had to run out , this thing is simplified to y = x + 5, of those 4 points (x,y) that are given , (-4 , 1) works x = -4 is still a solution because it checks out to work in the simplified function y = x + 5
DanJS
  • DanJS
in the original , if x=-4 , you get 0's places
DanJS
  • DanJS
look at "extraneous solutions for rational functions '
iwanttogotostanford
  • iwanttogotostanford
@DanJS so, it would be A: (-4,1)?
triciaal
  • triciaal
|dw:1449463921888:dw|
triciaal
  • triciaal
another approach or to justify what I think: f(-4) you would be dividing by zero f(4) = 4^2 + 9*4 = 20 divided by 4 + 4 = 16 +36 + 20 over 8 = 72/8 = 9 hence (4, 9)

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