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A function is shown: f(x) = 16x2 − 1. Choose the equivalent function that best shows the x-intercepts on the graph.

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Answer:

Step-by-step explanation:

f(x) = 16x² - 1

The x-intercepts are the roots, i.e., the values of x for which f(x) = 0.

Use the Quadratic Formula to determine the roots.

x = [0±√0²-4·16(-1)]/[2·16] = ±√64/32 = ±8/32 = ±¼

f(x) = 16(x-¼)(x+¼) = (4x-1)(4x+1)

The function which is equivalent to f(x)=16[tex]x^{2}[/tex]-1 is f(x)=(4x+1)(4x-1) and x intercept lies at (1/4,0),(1/4,0).

What is function?

Function is relationship between two or more that are variables expressed in equal to form. In a function each value of x must have a corresponding value of y.

How to solve a function?

The function which is being give to us is f(x)=16[tex]x^{2}[/tex]-1 and we have to find the equivalent function that best shows the x intercepts on the graph.

f(x)=16[tex]x^{2}[/tex]-1

We can find the factors of the expression 16[tex]x^{2}[/tex]-1.

f(x)=[tex](4x)^{2} -(1)^{2}[/tex]

=(4x+1)(4x-1)  [We know that [tex]a^{2} -b^{2}[/tex]=(a+b)(a-b)]

Now we have to find the x intercept. We know that x intercept is a point at which the line touches the x axis means y coordinate will be zero at that point. So we have to put the value of f(x)=0

(4x-1)(4x+1)=0

It can be like under:

4x-1=0,4x+1=0

x=1/4,-1/4

Hence the function which is equivalent to f(x)=16[tex]x^{2}[/tex]-1 is f(x)=(4x+1)(4x-1) and x intercept lies at two points (-1/4,0,(1/4,0).

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