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Lelu [443]
4 years ago
13

PLEASE HELP! I WILL GIVE BRAINLIEST!!!!

Mathematics
1 answer:
victus00 [196]4 years ago
6 0
Quadratic means 2nd degree
I'm thinking

y=ax²

when x=2, y=2
when x=4, y=8

so

2=a2² and
8=a4² or

2=4a and
8=16a
easy
divide first equation by 4 and 2nd by 16 to get

1/2=a

then

y= \frac{1}{2}x^2



A. I would say 1/2 is constant
B. isy= \frac{1}{2}x^2
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Horizontal asymptotes are the opposite and is where x tends to infinity -- This can be done by dividing through with the xs still there, since you are effectively just looking at multiples of infinity and infinity squared and so on. When you have an x to the power you can forget about all the other x's on the same half of the fraction, since infinity squared is infinitely bigger than infinity - yes it's abstract and a bit stupid I know.
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The vertical asymptote can be found by solving 2x^2-8=0 i.e. x=+-2 so our vertical asymptotes are at 2 and -2.

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