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Please Help Me
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
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Question #2
Michele_Laino
  • Michele_Laino
it is the equation of a straight line

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Michele_Laino
  • Michele_Laino
for example, if I replace m=0, what is h?
freemap
  • freemap
100
Michele_Laino
  • Michele_Laino
that's right! So such line passes at point \((0,100)\)
Michele_Laino
  • Michele_Laino
now, if I replace \(h=0\), what is \(m\)?
freemap
  • freemap
100?
Michele_Laino
  • Michele_Laino
hint: we have to solve this equation: \(0=20m+100\) \(m=...?\)
freemap
  • freemap
2
Michele_Laino
  • Michele_Laino
If I subtract 100, from both sides, I get: \(0-100=20m+100-100\) please simplify
freemap
  • freemap
Thats what i did i thought, 0-100=-100/200=-2. I forget the neg. sign on 100
freemap
  • freemap
-2
Michele_Laino
  • Michele_Laino
I get this: \(-100=20m\) am I right?
freemap
  • freemap
-5 gosh I was thinking 20 was 200 sorry
Michele_Laino
  • Michele_Laino
ok! :) so our line also passes at point \((-5,0)\)
Michele_Laino
  • Michele_Laino
therefore, here is the corresponding graph: |dw:1450024752650:dw| please add the coordinates to my graph
Michele_Laino
  • Michele_Laino
hint: |dw:1450024881070:dw|
freemap
  • freemap
|dw:1450024915395:dw|
freemap
  • freemap
i just saw your graph
Michele_Laino
  • Michele_Laino
our line passes at point \((0,100)\) and not at point \((0,5)\)
freemap
  • freemap
oh yea. I remember
Michele_Laino
  • Michele_Laino
|dw:1450025002222:dw|
freemap
  • freemap
yes
Michele_Laino
  • Michele_Laino
that's right!
Michele_Laino
  • Michele_Laino
now, we have to interpret the meaning of the x-intercept
freemap
  • freemap
intercept is the same thing as the x value ?
Michele_Laino
  • Michele_Laino
yes! It is \(m=-5\)
Michele_Laino
  • Michele_Laino
substantially, such value represents the height of the kite, with respect to a reference height, \(5\) minutes before starting of the competition
freemap
  • freemap
y=minutes after a kite-flying competition begins.
Michele_Laino
  • Michele_Laino
no, please the vertical coordinate \(y\) gives the height of the kite, whereas the corrdinate \(x\), gives the minutes
Michele_Laino
  • Michele_Laino
coordinate* \(x\)
Michele_Laino
  • Michele_Laino
so, at the time wherein the competition starts, which is \(m=0\), what is the height of the kite?
freemap
  • freemap
5
Michele_Laino
  • Michele_Laino
please keep in mind that at \(m=0\) we have \(h=100\) feet (it is the point \((0,100)\))
Michele_Laino
  • Michele_Laino
so, if \(m=0\) then \(h=...?\)
freemap
  • freemap
100
Michele_Laino
  • Michele_Laino
that's right! At the time wherein the competition starts, the height of the kite is \(h=100\) feet. That is the meaning of the \(y-\) intercept
freemap
  • freemap
The height of the kite
Michele_Laino
  • Michele_Laino
yes! at \(m=0\) the height of the kite is \(h=100\) feet
freemap
  • freemap
Thank you so much
Michele_Laino
  • Michele_Laino
:)

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