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Consider the following function:

[tex]\[ f(x) = \frac{6x - 1}{x - 5} \][/tex]

(a) Use a graphing utility to graph the function and find the zeros of the function. (Round your answers to two decimal places. Enter your answers as a comma-separated list.)

[tex]\[ x = \square \][/tex]

(b) Verify your results from part (a) algebraically. (Enter your answers as a comma-separated list.)

[tex]\[ x = \square \][/tex]

Sagot :

Let's solve the problem step-by-step.

### (a) Graphing the Function and Finding the Zeros

The function given is:
[tex]\[ f(x) = \frac{6x - 1}{x - 5} \][/tex]

A "zero" of the function [tex]\( f(x) \)[/tex] is any value of [tex]\( x \)[/tex] where [tex]\( f(x) = 0 \)[/tex]. This means we need to solve for [tex]\( x \)[/tex] where the numerator is zero, since a fraction is zero only when its numerator is zero (provided the denominator is not zero).

Let's set the numerator to zero:
[tex]\[ 6x - 1 = 0 \][/tex]

Solving for [tex]\( x \)[/tex]:
[tex]\[ 6x = 1 \][/tex]
[tex]\[ x = \frac{1}{6} \approx 0.1667 \][/tex]

So, the zero of the function, rounded to two decimal places, is:
[tex]\[ x = 0.17 \][/tex]

### (b) Verifying the Results Algebraically

We have already found the zero of the function by solving the numerator equal to zero:
[tex]\[ 6x - 1 = 0 \][/tex]
[tex]\[ 6x = 1 \][/tex]
[tex]\[ x = \frac{1}{6} \][/tex]

This confirms that the zero is:
[tex]\[ x = 0.17 \][/tex]

Thus, verifying our result algebraically gives the same solution.

To summarize:

(a) The zero of the function is:
[tex]\[ x = 0.17 \][/tex]

(b) Verifying this result algebraically confirms:
[tex]\[ x = 0.17 \][/tex]