Algebra II : Algebra II

Study concepts, example questions & explanations for Algebra II

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Example Questions

Example Question #5 : Function Notation

Find  for the following function:

Possible Answers:

Correct answer:

Explanation:

To evaluate , we just plug in a  wherever we see an  in the function, so our equation becomes

which is equal to

 

Example Question #7 : Function Notation

Find  for the following function:

Possible Answers:

Correct answer:

Explanation:

To find , all we do is plug in  wherever we see an  in the function. We have to be sure we keep the parentheses. In this case, when we plug in , we get

Then, when we expand our binomial squared and distribute the , we get

Example Question #3 : Function Notation

If , and  , for which of the following  value(s) will  be an odd number?

Possible Answers:

Correct answer:

Explanation:

First, x needs to be plugged into g(x).

Then, the resulting solution needs to be substituted into f(x).

For example,

Since 45 is an odd number, 7 is an x value that gives this result. Because both equations subtract an odd number to get the final result, only an odd number will result in an odd result therefore, none of the other options will give an odd result.

Example Question #661 : Algebra Ii

Given , find .

Possible Answers:

Correct answer:

Explanation:

Plug in a for x:

Next plug in (a + h) for x:

Therefore f(a+h) - f(a) =  .

 

Example Question #661 : Algebra Ii

Solve for  when .

Possible Answers:

Does not exist

Correct answer:

Explanation:

Plug 3 in for x:

 

Simplify:

 = 

 = 5

 

Example Question #3374 : Algebra 1

What is of the following equation? 

Possible Answers:

Correct answer:

Explanation:

To complete an equation with a  function, plug the number inside the parentheses into the equation for  and solve algebraically.

In this case the 

Square the 7 and multiply to get 

Add the numbers to get the answer .

Example Question #41 : Algebraic Functions

Possible Answers:

Correct answer:

Explanation:

Example Question #42 : How To Find F(X)

Possible Answers:

Correct answer:

Explanation:

Example Question #13 : Function Notation

If , find .

Possible Answers:

Correct answer:

Explanation:

If  then  can be rewritten as . Therefore, . Subtracting  from both sides of the eqauation gives .

Example Question #661 : Algebra Ii

Evaluate the function for .

Possible Answers:

Correct answer:

Explanation:

To solve for the value of the function at , simply plug in the value  in place of every . By doing this, you will be left with the equation:.

Another way to go about the problem is first simplifying the expression so that like terms are collected, so . Then to find , simply plug in the value  in place of every .  By doing this, you will be left with the equation:.

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