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3 years ago

Find a quadratic function that includes the set of values below.

Mathematics

1 answer:

dusya [7]3 years ago

3 0

Answer:

Let y=ax^2+bx+c be the equation of the parabola. Set up equations.

Using (0,5). 5=a(0)2+b(0)+c

(

)

(

)

Using (2,15), 15=a(2)2+b(2)+5

(

)

(

)

4a+2b=10

2a+b=5

Using (4,9)

9=a(4)2+b(4)+5

(

)

(

)

16a+4b=4

4a+b=1

Subtract each side of (1) and (2) to eliminate b and solve for a: -2a=4

a=-2

Solve for b using (1): 2(-2)+b=5

-4+b=5

b=9

So, the equation is y=−2x2+9x+5

Step-by-step explanation:

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3 years ago

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Answer:

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2 years ago

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3 years ago

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erastova [34]

Answer:

Yes, it's also true about the confidence interval method.

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