Graph each function. Identify the domain and
[Pages:19]2-6 Special Functions Graph each function. Identify the domain and range.
1.
SOLUTION:
The y-coordinates of points on the graph are real numbers less than or equal to 4, so the range
is
.
2. SOLUTION:
The function is defined for all real values of x, so the domain is all real numbers.
D = {all real numbers}
The y-coordinates of points on the graph are real numbers less than or equal to 4, so the range
is
.
The function is defined for all real values of x, so the domain is all real numbers.
D = {all real numbers}
The y-coordinates of points on the graph are real numbers between 8 and ?2 and less than or equal to
?8, so the range is
.
Write the piecewise-defined function shown in each graph.
2.
SOLUTION:
The function is defined for all real values of x, so the domain is all real numbers.
D = {all real numbers}
The y-coordinates of points on the graph are real eSolutniounms Mbaenrsuabl e- tPwoweeerned8baynCdog?n2eraond less than or equal to
?8, so the range is
.
3.
SOLUTION:
The left portion of the graph is the line g(x) = x + 4. There is an open circle at (?2, 2), so the domain for
this part of the function is
.
The center portion of the graph is the constant function g(x) = ?3. There are closed dots at (?2, ?3) and (3, 3), so the domain for this part is
. The right portion of the graph is the line g(x) = ?2x + 12. There is an open circle at (3, 6), so the domain
for this part is
.
Page 1
Write the piecewise function.
D = {all real numbers}
The y-coordinates of points on the graph are real
2-6 SnpuemcbiaelrsFbuentwcteioenns8 and ?2 and less than or equal to
?8, so the range is
.
Write the piecewise-defined function shown in each graph.
3.
SOLUTION:
The left portion of the graph is the line g(x) = x + 4. There is an open circle at (?2, 2), so the domain for
this part of the function is
.
The center portion of the graph is the constant function g(x) = ?3. There are closed dots at (?2, ?3) and (3, 3), so the domain for this part is
. The right portion of the graph is the line g(x) = ?2x + 12. There is an open circle at (3, 6), so the domain
for this part is
.
Write the piecewise function.
4.
SOLUTION:
The left portion of the graph is the constant function g(x) = 6. There is a closed dot at (?5, 6), so the
domain for this part is
.
The center portion of the graph is the line g(x) = ?x + 4. There are open circles at (?5, 9) and (?2, 6), so
the domain for this part is
.
The right portion of the graph is the line
. There is a closed dot at (?2, 0), so
the domain for this part is
.
Write the piecewise function.
4.
SOLUTION:
The left portion of the graph is the constant function g(x) = 6. There is a closed dot at (?5, 6), so the
domain for this part is
.
eSolutTiohnes Mceanutearl -pPoorwtieorendobfy tChoegngerraoph is the line g(x) = ?x + 4. There are open circles at (?5, 9) and (?2, 6), so
the domain for this part is
.
5. CCSS REASONING Springfield High School's theater can hold 250 students. The drama club is performing a play in the theater. Draw a graph of a step function that shows the relationship between the number of tickets sold x and the minimum number of performances y that the drama club must do.
SOLUTION: When x is greater than 0 and less than or equal to 250, the drama club needs to do only one performance. When x is greater than 250 and less than or equal to 500, they must do at least two performances. Continue the pattern with a table.
Page 2
2-6 Special Functions
5. CCSS REASONING Springfield High School's theater can hold 250 students. The drama club is performing a play in the theater. Draw a graph of a step function that shows the relationship between the number of tickets sold x and the minimum number of performances y that the drama club must do.
SOLUTION: When x is greater than 0 and less than or equal to 250, the drama club needs to do only one performance. When x is greater than 250 and less than or equal to 500, they must do at least two performances. Continue the pattern with a table.
Graph each function. Identify the domain and range. 6.
SOLUTION:
D = {all real numbers} The function g(x) is a reflection of twice of a greatest integer function. So, g(x) takes all even integer values or zero. R = {all even integers}
7.
SOLUTION:
Graph each function. Identify the domain and range. 6. SOLUTION:
D = {all real numbers}
eSolutions Manual - Powered by Cognero
The function g(x) is a reflection of twice of a greatest integer function. So, g(x) takes all even
D = {all real numbers} R = {all integers}
Graph each function. Identify the domain and range.
8.
SOLUTION:
Page 3
D = {all real numbers} 2-6 SRp=ec{iallFinutnegcetiros}ns
Graph each function. Identify the domain and range. 8.
SOLUTION:
D = {all real numbers} .
10.
SOLUTION:
D = {all real numbers}
9. SOLUTION:
D = {all real numbers} .
11. SOLUTION:
D = {all real numbers} .
10. SOLUTION:
eSolutions Manual - Powered by Cognero
D = {all real numbers} .
Graph each function. Identify the domain and range.
12.
SOLUTION:
Page 4
D = {all real numbers} 2-6 Special Functions .
. .
Graph each function. Identify the domain and
range.
14.
12. SOLUTION:
SOLUTION:
. .
13. SOLUTION:
. .
14.
eSolutions Manual - Powered by Cognero
SOLUTION:
D = {all real numbers} .
15. SOLUTION:
.
Write the piecewise-defined function shown in each graph.
16.
SOLUTION:
Page 5
The left portion of the graph is the constant function g(x) = ?8. There is a closed dot at (?6, ?8), so the
2-6 Special Functions .
Write the piecewise-defined function shown in each graph.
16.
SOLUTION:
The left portion of the graph is the constant function g(x) = ?8. There is a closed dot at (?6, ?8), so the
domain for this part of the function is
.
The center portion of the graph is the line g(x) = 0.25x + 2. There are closed dots at (?4, 1) and (4, 3),
so the domain for this part is
.
The right portion of the graph is the constant function g(x) = 4. There is an open circle at (6, 4), so the
constant function is defined for
.
Write the piecewise function.
17.
SOLUTION:
The left portion of the graph is the line g(x) = ?x ? 4. There is an open circle at (?3, ?1), so the domain for
this part of the function is
. The center portion of the graph is the line g(x) = x + 1. There are closed dots at (?3, ?2) and (1, 2), so the
domain for this part is
.
The right portion of the graph is the constant function g(x) = ?6. There is an open circle at (4, ?6), so the
domain for this part is
.
Write the piecewise function.
17.
SOLUTION:
The left portion of the graph is the line g(x) = ?x ? 4. There is an open circle at (?3, ?1), so the domain for
this part of the function is
. The center portion of the graph is the line g(x) = x + eSolut1io.nTs hMearneuaalr-ePcowloesreeddbdyoCtosganter(o?3, ?2) and (1, 2), so the
domain for this part is
.
18.
SOLUTION:
The left portion of the graph is the constant function g(x) = ?9. There is an open circle at (?5, ?9), so the
domain for this part of the function is
.
The center portion of the graph is the line g(x) = x + 4. There are closed dots at (0, 4) and (3, 7), so the
domain for this part is
.
The right portion of the graph is the line g(x) = x ? 3.
There is an open circle at (7, 4), so the domain foPrage 6
this part is
.
2-6 Special Functions
18.
SOLUTION:
The left portion of the graph is the constant function g(x) = ?9. There is an open circle at (?5, ?9), so the
domain for this part of the function is
.
The center portion of the graph is the line g(x) = x + 4. There are closed dots at (0, 4) and (3, 7), so the
domain for this part is
.
The right portion of the graph is the line g(x) = x ? 3. There is an open circle at (7, 4), so the domain for
this part is
.
Write the piecewise function.
19.
SOLUTION:
The left portion of the graph is the constant function g(x) = 8. There is a closed dot at (?1, 8), so the
domain for this part is
.
The center portion of the graph is the line g(x) = 2x. There are closed dots at (4, 8) and (6, 12), so the
domain for this part is
.
The right portion of the graph is the line g(x) = 2x ? 15. There is a circle at (7, ?1), so the domain for this
part is
.
Write the piecewise function.
19.
SOLUTION:
The left portion of the graph is the constant function g(x) = 8. There is a closed dot at (?1, 8), so the
domain for this part is
.
The center portion of the graph is the line g(x) = 2x. There are closed dots at (4, 8) and (6, 12), so the
domain for this part is
.
eSolutTiohnes Mriagnhutapl -oPrtoiwoenreodfbtyhCeoggrnaeproh is the line g(x) = 2x ? 15. There is a circle at (7, ?1), so the domain for this
part is
.
Graph each function. Identify the domain and range. 20.
SOLUTION:
D = {all real numbers} R = {all integers}
21.
Page 7
2-6 Special Functions
Graph each function. Identify the domain and range. 20.
SOLUTION:
D = {all real numbers} R = {all integers} 22. SOLUTION:
D = {all real numbers} R = {all integers} 21. SOLUTION:
D = {all real numbers} R = {all integers} 22. SOLUTION:
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D = {all real numbers}
D = {all real numbers} R = {all integers} 23. SOLUTION:
The function is defined for all real values of x, so the domain is all real numbers. D = {all real numbers} The function g(x) is twice of a greatest integer function. So, g(x) takes only even integer values. Therefore, the range is R = {all even integers}. Graph each function. Identify the domain and range. 24. SOLUTION:
Page 8
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