Functions

Which set of ordered pairs is a function?

• {(9,5), (10,5), (9,-5), (10,-5)}

• {(3,4), (4,-3), (7,4), (3, 8)}

• {(6,-5), (7, -3), (8, -1), (9, 1)}

• {(2, -2), (5, 9), (5, -7), (1, 4)}

Tags

CCSS.8.F.A.1

What is the definition of function?

• Has inputs and outputs
• Every input has only ONE output
• Inputs have different outputs every time
• x-values and y-values

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.
• Yes, because each x-value has only one y-value paired with it.
• No, because the x-value 11 has two y-values pair with it.
• No, because each x-value has only one y-value paired with it.

Tags

CCSS.8.F.A.1

Which of these tables represent a function?

• A
• B
• C
• D

Tags

CCSS.8.F.A.1

How do you determine if a relation is a function? 

• The vertical line test crosses more than one point on the graph.
• The same y-values are mapped from the same x-values.
• The vertical line test crosses only one point on the graph.
• Each input is related to more than one output.

Tags

CCSS.HSF.IF.A.1

Is this a function? Explain.

• Yes; it passes the horizontal line test.
• No; it is not a straight line.
• Yes; it passes the vertical line test.
• No; there is a line connecting the dots.

Tags

CCSS.HSF.IF.A.1

CCSS.HSF.IF.B.5

CCSS.HSF.IF.C.7

Is this table a function or not a function? 

• Function 
• Not a function 

Tags

CCSS.8.F.A.1

Which set of coordinates is NOT a function?

• (5,10) (2, -3) (8,12) (-4, 2)
• (5, 10) (2, 10) (3, 10) (-4, 10)
• (5, 10) (2, -3) (8, 12) (2, -4)
• (10, 5), (-3, 2) (12, 8) (2, -4)

Tags

CCSS.8.F.A.1

Which graph is linear?

• Graph A
• Graph B
• Graph C
• Graph D

Tags

CCSS.8.F.A.3

Is function represented by the table linear or nonlinear?

• linear
• nonlinear

Tags

CCSS.8.F.A.3