Functions, Domain, & Range

What is a function?

• A relation that maps every domain value to exactly one range value.

• A relation that maps every range value to exactly one domain value.

• Any set of ordered pairs.

• Any graph of x and y values.

Tags

CCSS.8.F.A.1

What is the domain of this function?
{(0,2), (3,5), (5,8), (7, 11)}

• {2,5,8,11}
• {0,3,5,7}
• [0,7]
• [2,11]

What is the domain of this graph?

• [-1,1]
• [-2,2]
• (-1,-2)
• (-∞,+∞)

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

What is the range of this graph?

• (-∞,+∞)
• (-2,2)
• (-1,1)
• [-2,2]

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

What is the domain of the absolute value function f(x) = |x| + 4?

• (4, 0)

• (0, 4)

• (-infinity, infinity)

• [4, infinity)

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

Is this a function?  Why or why not? 

• Yes, because none of the domain numbers repeated.
• Yes, because none of the range letters repeated.
• No, because 3 goes to A and 4 goes to A.
• No, because A gets used twice.

Tags

CCSS.8.F.A.1

What is the range?

• 0, 4, 10, 12

• 1, 2, 4, 5, 10, 12

• 0, 4, 10, 4, 12

• 1, 2, 5

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

What is the test to determine if a graph represents a function?

• Horizontal line test

• Vertical line test

• Heidelberg Uncertainty Test

• Obi Wan Kenobi Test

Is this table a function or not a function? 

• Function
• Not a Function

Tags

CCSS.8.F.A.1

Is this graph a function or not a function? 

• Function
• Not a Function