Destinyyyy
  • Destinyyyy
Need a refresher on a few problems..
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Destinyyyy
  • Destinyyyy
Find and simplify the difference quotient f(x+h)-f(x) over h , h=/0 for the given function. f(x)=x^2 +4x+5
Destinyyyy
  • Destinyyyy
I got 2x+h+4.
Destinyyyy
  • Destinyyyy
(2,5) perpendicular to the line y-1/6x +8

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More answers

Destinyyyy
  • Destinyyyy
I got y=-1/6x -17/6
Destinyyyy
  • Destinyyyy
@IrishBoy123
IrishBoy123
  • IrishBoy123
post/scan/link/draw the original question if you can, pls. then i can try help :p
Destinyyyy
  • Destinyyyy
1 Attachment
IrishBoy123
  • IrishBoy123
for perpendicular lines, following general equation \(y = mx + c\). we know that \(m_1 m_2 = -1\)
Destinyyyy
  • Destinyyyy
Yeah..
IrishBoy123
  • IrishBoy123
yeah.... work it from there
Destinyyyy
  • Destinyyyy
y-5= -1/6(x-2)
superdavesuper
  • superdavesuper
Note what is posted: m1*m2=−1 so -1/6 is not the right slope....
Destinyyyy
  • Destinyyyy
Oh my gosh -.-
Destinyyyy
  • Destinyyyy
Okay starting over now.. y-5=-6/1(x-2)
Destinyyyy
  • Destinyyyy
Answer- y=-6x+17
superdavesuper
  • superdavesuper
correct :)
Destinyyyy
  • Destinyyyy
Okay. Cannot believe I did that
Destinyyyy
  • Destinyyyy
Next question..
Destinyyyy
  • Destinyyyy
Use the graph of the function f, plotted with a solid line, to sketch the graph of the given function g. g(x)= -f(x+2)-2 y=f(x)
Destinyyyy
  • Destinyyyy
I know -f causes it to be flipped.. But I cant remember if (x+2) is vertical or horizontal.. I think horizontal :/
Destinyyyy
  • Destinyyyy
1 Attachment
superdavesuper
  • superdavesuper
|dw:1449179210336:dw| make sense?
Destinyyyy
  • Destinyyyy
Uh no
Destinyyyy
  • Destinyyyy
Are you saying (x+2) is the vertical shift?
superdavesuper
  • superdavesuper
|dw:1449179417456:dw| notice the expression x+2 will just move everything sideway by +2
superdavesuper
  • superdavesuper
Nope it is sideway so horizontal...look at wat i have drawn above plz
Destinyyyy
  • Destinyyyy
Oops horizontal
Destinyyyy
  • Destinyyyy
I was thinking the correct thing and typed the wrong one
superdavesuper
  • superdavesuper
now how about the -2 part? notice that it is the same as replacing y by y+2...
Destinyyyy
  • Destinyyyy
So reflect horizontal shift left 2 vertical shift down 2
superdavesuper
  • superdavesuper
VERY VERY good, @Destinyyyy :) correct on all! lol
Destinyyyy
  • Destinyyyy
Thank you
superdavesuper
  • superdavesuper
welcome...alright since u got the last one so quickly - 1 more? ;)
Destinyyyy
  • Destinyyyy
Okay!
Destinyyyy
  • Destinyyyy
For the given function f and g, find the indication composition. f(x)= 2 over x+5 , g(x)= 5 over 3x (fog)(x)
Destinyyyy
  • Destinyyyy
f(gx)=f(5 over 3x) 2 over x+5 (5 over 3x)
Destinyyyy
  • Destinyyyy
I feel like im not setting it up right :/
superdavesuper
  • superdavesuper
can u write it out the eqn instead of typing plz?
Destinyyyy
  • Destinyyyy
Sorry ill try drawing it.. I dont get how to use the equation thing
superdavesuper
  • superdavesuper
drawing will work too thanx :)
Destinyyyy
  • Destinyyyy
|dw:1449180290064:dw|
superdavesuper
  • superdavesuper
|dw:1449180377388:dw|
Destinyyyy
  • Destinyyyy
Your right.. I knew it looked off
superdavesuper
  • superdavesuper
mine makes sense to u? :)
Destinyyyy
  • Destinyyyy
Yes but Im not sure what to do next
superdavesuper
  • superdavesuper
take a guess?
Destinyyyy
  • Destinyyyy
Uh clear out the +5 ... I have no clue :(
superdavesuper
  • superdavesuper
|dw:1449181114458:dw|
Destinyyyy
  • Destinyyyy
Hmm that makes sense
Destinyyyy
  • Destinyyyy
For the denominator I cancel out the 3x and do 5* 3x correct or..?
superdavesuper
  • superdavesuper
so wat u get 4 da denominator?
Destinyyyy
  • Destinyyyy
Answer- 6x over 5+15
Destinyyyy
  • Destinyyyy
15x **
superdavesuper
  • superdavesuper
5+15_____ missing sumthing?
superdavesuper
  • superdavesuper
alright i will let it slide tis time @Destinyyyy lol
Destinyyyy
  • Destinyyyy
Lol thanks
superdavesuper
  • superdavesuper
welcome...put up a new post n see if u can better help ;) good luck!
Destinyyyy
  • Destinyyyy
Alright. Thank you!

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