Algebra 1 : Algebra 1

Study concepts, example questions & explanations for Algebra 1

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Example Questions

Example Question #3371 : Algebra 1

Solve for , when .

Possible Answers:

Correct answer:

Explanation:

Plug in the  value for .

Simplify

Subtract

Example Question #3372 : Algebra 1

For the following equation, if x = 2, what is y?

Possible Answers:

9

25

16

1

7

Correct answer:

9

Explanation:

On the equation, replace x with 2 and then simplify.

Example Question #32 : How To Find F(X)

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 #3375 : Algebra 1

Possible Answers:

Correct answer:

Explanation:

Example Question #3376 : Algebra 1

Possible Answers:

Correct answer:

Explanation:

Example Question #43 : How To Find F(X)

.

Find .

Possible Answers:

Correct answer:

Explanation:

Finding means plugging in in place of x into the function . In this case, we are told that , so we are multiplying by 2 and then adding 17:

order of opperations tells us to first multiply:

and now add:

Example Question #44 : How To Find F(X)

.

Evaluate .

Possible Answers:

Correct answer:

Explanation:

Evaluating means plugging 5 in for x in the function . In this case, we are told that , so that is what we will do to 5 - multiply by 2, then square the product: 

order of opperations [PEMDAS] tells us that first we will be doing what is in the parentheses, so we will multiply first:

now we can square 10 for the final answer:

 

Example Question #45 : How To Find F(X)

.

Find .

Possible Answers:

Correct answer:

Explanation:

Evaluating means plugging in 2 for x in the function . In this case we are told that , so that is what we'll do with 2:

 Order of opperations [PEMDAS] tells us to do parentheses first, but no opperations are taking place in parentheses. Next we will do exponents:

The next step in order of opperations is multiplication, so we will next multiply 3 and 4:

finally we will subtract:

Example Question #41 : Algebraic Functions

If  is the reciprocal of the following function what is ?

Possible Answers:

Correct answer:

Explanation:

The question is asking for the reciprocal.

The reciprocal can be found by flipping the numerator and the denominator, effectively dividing 1 by the number.

becomes .

*Always remember what the question is asking.

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