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Zepler [3.9K]
3 years ago
11

Pre calculus help please!!! Write the range of the function given in the graph in interval notion? I think the answer is B.

Mathematics
2 answers:
kirza4 [7]3 years ago
6 0

Question 1: C. (-4, 8]

With B, I think you assumed since there are two separate lines for the function, there must be two separate ranges. Additionally, you state that the left one has a range from -4 to 3, each non-inclusive, which is incorrect as there is a solid point at y = 3. However, the -4 non-inclusive part is correct.

Basically, this is all one function therefore there should be a single range. Since as you can see on the graph, 8 is included, the new range should be (-4, 8]. The function extends from -4, non-inclusive, to 8, inclusive. Even though there is a gap between the two parts, it is a singular function and as a whole, both are considered when calculating the range.


Question 2: C, {x | x > 10}

You are correct! x = 10 is a vertical asymptote for this function - the function will never reach this value so you should not use the "greater than or equal to" sign.

muminat3 years ago
6 0
<h2>Answer:</h2>

Ques 1)

The range of the function given in the graph in interval notion is:

                        (-4,8]

Ques 2)

The domain of the function given in the graph in set builder notation is:

                        {x| x≥10 }

<h2>Step-by-step explanation:</h2>

Ques 1)

<u>Range of a function--</u>

The range of a function is the set of all the values which are attained by a function in it's defined domain.

By looking at the function we observe that the function takes all the values between -4 to 8.

Also the value -4 is excluded is from the range since there is a open circle at (-7,-4) and 8 is included in the range.

Since there is a closed circle at (2,8)

Hence, the range of the function is:

                      (-4,8]

Ques 2)

<u>Domain of a function--</u>

The domain of a function is the set of all the x-values for which the function is defined.

By looking at the function we observe that the function is defined for all x greater than or equal to 10.

Hence, the domain of the function is:

              {x| x≥10 }

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