High School Math : Understanding Asymptotes

Study concepts, example questions & explanations for High School Math

varsity tutors app store varsity tutors android store

Example Questions

2 Next →

Example Question #1311 : High School Math

Find the vertical asymptote(s) of .

Possible Answers:

 and 

There are no real vertical asymptotes.

Correct answer:

 and 

Explanation:

To find the vertical asymptotes, we set the denominator of the fraction equal to zero, as dividing anything by zero is "undefined." Since it's undefined, there's no way for us to graph that point!

Take our given equation, , and now set the denominator equal to zero:

.

Don't forget, the root of a positive number can be both positive or negative ( as does ), so our answer will be .

Therefore the vertical asymptotes are at  and .

Example Question #21 : Exponents

Find the horizontal asymptote(s) of .

Possible Answers:

 and 

There are no real horizontal asymptotes.

Correct answer:

There are no real horizontal asymptotes.

Explanation:

To find the horizontal asymptote of the function, look at the variable with the highest exponent. In the case of our equation, , the highest exponent is  in the numerator.

 

When the variable with the highest exponent is in the numberator, there are NO horizontal asymptotes. Horizontal asymptotes only appear when the greatest exponent is in the denominator OR when the exponents have same power in both the denominator and numerator.

Example Question #1 : Quadratic Functions

What are the -intercepts of the equation?

Possible Answers:

There are no -intercepts.

Correct answer:

Explanation:

To find the x-intercepts of the equation, we set the numerator equal to zero.

Example Question #1 : Solving And Graphing Exponential Equations

Find the vertical asymptote of the equation.

Possible Answers:

There are no vertical asymptotes.

Correct answer:

Explanation:

To find the vertical asymptotes, we set the denominator of the function equal to zero and solve.

Example Question #14 : Solving And Graphing Exponential Equations

What is the horizontal asymptote of this equation?

Possible Answers:

There is no horizontal asymptote.

Correct answer:

There is no horizontal asymptote.

Explanation:

Since the exponent of the leading term in the numerator is greater than the exponent of the leading term in the denominator, there is no horizontal asymptote.

2 Next →
Learning Tools by Varsity Tutors