KJ4UTS
  • KJ4UTS
Determine whether linear, quadratic or exponential...
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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KJ4UTS
  • KJ4UTS
KJ4UTS
  • KJ4UTS
This is what I got for 0 to 5: http://www.wolframalpha.com/input/?i=%280%2C2.7%29%281%2C4.1%29%282%2C1.5%29%283%2C-5.1%29%284%2C-15.7%29%285%2C-30.3%29+
KJ4UTS
  • KJ4UTS
This is what I got for 5 to 9: http://www.wolframalpha.com/input/?i=%285%2C-30.3%29%286%2C-15.1%29%287%2C-7.6%29%288%2C-3.8%29%289%2C-1.9%29

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More answers

KJ4UTS
  • KJ4UTS
To me it looks like they are both quadratic and I put that but 1 of them was wrong and they won't let me know which one is quadratic and what the other one is?
DanJS
  • DanJS
hi, you still working here?
KJ4UTS
  • KJ4UTS
@DanJS Hey I am back I had to do something sorry.
KJ4UTS
  • KJ4UTS
I know one is quadratic for sure I just do not know which one?
DanJS
  • DanJS
hi
DanJS
  • DanJS
this my last, then i hav eto run for a bit
KJ4UTS
  • KJ4UTS
ok thank you
DanJS
  • DanJS
Linear must have a constant slope, for each increase of x, y increases same amount,
DanJS
  • DanJS
th efirst interval x=0 to x=5 increases, then decreases, that is not linear the second interval is always decreasing, but not by the same amount each time, not linear
DanJS
  • DanJS
to be exponential, it has a constant multiplier for each increase in x, y = a*(b)^x for each increase in x, the y value is multiplied by another b
DanJS
  • DanJS
a is the value when x=0,
DanJS
  • DanJS
the first interval changes from increasing to decreasing, that must be quadratic from those choices
KJ4UTS
  • KJ4UTS
oh I see it now 0 to 5 is quadratic
DanJS
  • DanJS
5-9 is always increasing but slowing down at a exponential rate
KJ4UTS
  • KJ4UTS
oh ok so 5-9 exponential
DanJS
  • DanJS
to check , you can divide one y value by the previous, and it should be the same ratio between one and the previous
DanJS
  • DanJS
that is the b value in y=a*b^x
DanJS
  • DanJS
notice, each is 0.5 (they rounded a tiny bit for some values) times the previous, it is an exponential
DanJS
  • DanJS
anything not clear?
KJ4UTS
  • KJ4UTS
No I am going to review everything you wrote, thank you for your help :)
DanJS
  • DanJS
1 sec ill find something
DanJS
  • DanJS
sorry i have to run for a bit, look at the algebra parts here, examples maybe, i was gonna look https://drive.google.com/folderview?id=0B1YZD9uzvB5TfnkzNzg5LU54VC1zUENBNHZoWlUxYXk1OXQtNklXdVVtZnA1T3c4X3hMMWM&usp=drive_web#list
KJ4UTS
  • KJ4UTS
I was just looking at this other one I have http://www.wolframalpha.com/input/?i=%280%2C3.2%29%281%2C4.6%29%282%2C6%29%283%2C7.4%29%284%2C8.8%29%285%2C10.2%29+%285%2C10.2%29%286%2C8.5%29%287%2C6.8%29%288%2C5.1%29%289%2C3.4%29 and what you said about linear "Linear must have a constant slope, for each increase of x, y increases same amount" I would say 0 to 5 and 5 to 9 are both linear.
KJ4UTS
  • KJ4UTS
Ok will do thanks :)
DanJS
  • DanJS
yeah linear y varies directly with x at a constant rate, the slope
DanJS
  • DanJS
y = m*x + b
DanJS
  • DanJS
be back later..
KJ4UTS
  • KJ4UTS
Ok

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