Question

Match each piece of the function with its domain.(6,♾️)(-♾️, 1)(1,♾️)(-♾️,-2(-♾️, 6)(-2, 6)(3,♾️)(1, 4)

Answer 1

Given the graph of a Piecewise Function, you can identify that it has three pieces. See the picture below:

By definition, the open circles indicates that that endpoint is not included in the interval of the function.

By definition, the Domain of a function is the set of all the input values (x-values) for which the function is defined.

In this case, you need to analyze each piece in order to determine its Domain:

1. Notice that piece 1 goes from:

$x=-\infty$

To:

$x=-2$

But -2 is not included. Therefore:

$Domain\colon(-\infty,-2)_{}$

2. Notice that piece 2 goes from:

$x=-2$

To:

$x=6$

But since its endpoints are not included:

$Domain\colon(-2,6)_{}$

3. Piece 3 goes from:

$x=6$

To:

$x=\infty$

Since the x-value 6 is not included:

$Domain\colon(6,\infty)_{}$

Hence, the answer is:

- For the first piece from left to right:

$Domain\colon(-\infty,-2)_{}$

- For the middle piece:

$Domain\colon(-2,6)_{}$

- For the third piece from left to right:

$Domain\colon(6,\infty)_{}$