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defon
2 years ago
14

Which statement about the asymptotes is true with respect to the graph of this function?

Mathematics
2 answers:
Ratling [72]2 years ago
7 0
When you graph the equation you notice that there is 2 vertical and 1 horizontal asymptote. or D
tensa zangetsu [6.8K]2 years ago
3 0

Answer:

Option D.

Step-by-step explanation:

The given function is

f\left(x\right)=\dfrac{3x^{2}-3}{x^{2}-4}

In this function the degree of numerator an denominator is same i.e., 2.

Horizontal Asymptotes: If the degree of numerator an denominator is same, then

\text{Horizontal asymptote}=\frac{\text{Leading coefficient of numerator}}{\text{Leading coefficient of denominator}}

\text{Horizontal asymptote}=\frac{3}{1}

\text{Horizontal asymptote}=3

Horizontal asymptote is y=3.

f(x)=3

\dfrac{3x^{2}-3}{x^{2}-4}=3

3(x^{2}-1)=3(x^{2}-4)

x^{2}-1=x^{2}-4

1=4

This statement is false for any value of x, therefore the graph does not cross the horizontal asymtote.

Vertical Asymptotes: Equate the denominator equal to 0, to find the vertical asymptotes.

x^2-4=0

Add 4 on both sides.

x^2=4

Taking square root on both sides.

x=\pm \sqrt{4}

x=\pm 2

Vertical asymptotes are x=2 and x=-2.

The graph has two vertical asymptotes and one horizontal asymptote.

Therefore, the correct option is D.

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