Explore IDNLearn.com's extensive Q&A database and find the answers you're looking for. Ask your questions and get detailed, reliable answers from our community of knowledgeable experts.

Use algebraic methods to prove that the given function has an [tex]$x$[/tex]-intercept that is equal to its [tex]$y$[/tex]-intercept. In your final answer, include all of your calculations.

[tex]\[ y = \frac{x}{x^2 - 4} \][/tex]


Sagot :

To determine whether the given function [tex]\( y = \frac{x}{x^2 - 4} \)[/tex] has an [tex]\( x \)[/tex]-intercept that is equal to its [tex]\( y \)[/tex]-intercept, we need to find both intercepts step-by-step and compare them.

### Finding the [tex]\( x \)[/tex]-intercept:
The [tex]\( x \)[/tex]-intercept occurs where [tex]\( y = 0 \)[/tex]. Therefore, we set the function equal to zero and solve for [tex]\( x \)[/tex]:
[tex]\[ \frac{x}{x^2 - 4} = 0 \][/tex]
A fraction is equal to zero when its numerator is zero (provided that the denominator is not zero). Thus, we solve:
[tex]\[ x = 0 \][/tex]
For [tex]\( x = 0 \)[/tex], the denominator is [tex]\( x^2 - 4 = 0^2 - 4 = -4 \)[/tex], which is not zero. Thus, the equation [tex]\( x = 0 \)[/tex] is valid. Therefore, the [tex]\( x \)[/tex]-intercept is:
[tex]\[ x = 0 \][/tex]

### Finding the [tex]\( y \)[/tex]-intercept:
The [tex]\( y \)[/tex]-intercept occurs where [tex]\( x = 0 \)[/tex]. Therefore, we substitute [tex]\( x = 0 \)[/tex] into the function and solve for [tex]\( y \)[/tex]:
[tex]\[ y = \frac{0}{0^2 - 4} = \frac{0}{-4} = 0 \][/tex]
Hence, the [tex]\( y \)[/tex]-intercept is:
[tex]\[ y = 0 \][/tex]

### Comparison:
Both the [tex]\( x \)[/tex]-intercept and the [tex]\( y \)[/tex]-intercept are [tex]\( 0 \)[/tex]. Therefore, the [tex]\( x \)[/tex]-intercept is equal to the [tex]\( y \)[/tex]-intercept.

### Conclusion:
The given function [tex]\( y = \frac{x}{x^2 - 4} \)[/tex] indeed has an [tex]\( x \)[/tex]-intercept that is equal to its [tex]\( y \)[/tex]-intercept, and both intercepts are at the point [tex]\( (0, 0) \)[/tex].
Thank you for joining our conversation. Don't hesitate to return anytime to find answers to your questions. Let's continue sharing knowledge and experiences! Discover the answers you need at IDNLearn.com. Thank you for visiting, and we hope to see you again for more solutions.