Functions

The graph of any straight line is a function.

• Always true.

• Sometimes true.

• Never true.

A curved line graph is not a function.

• Sometimes true.
• Always true.
• Never true.

A function has only one output for each input.

• True
• False

Tags

CCSS.8.F.A.1

You always check these values to see if they repeat when checking for a function.

• The Domain
• The Range
• The y-values
• The Dependent values

How do you check a GRAPH to see if it is a function?

• Use the horizontal line test

• Use the vertical line test

• Use guess and check

• Flip a coin

• Use the slope formula

If you plug in a 2 and get a 11, and you plug in a 4 and get a 21, what is the function used?

• f(x) = 5x + 1
• f(x) = 5x - 2
• f(x) = 4x + 3
• f(x) = 4x + 5

If you plug in a -2 and get a 7, and you plug in a -3 and get a 9, and you plug in a 4 and get a -5, what is the function used?

• f(x) = -x + 2
• f(x) = -2x + 3
• f(x) = -2x - 3
• f(x) = 4x - 3

Which set of values 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

Is this mapping 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

Tags

CCSS.HSF.IF.A.1

CCSS.HSF.IF.B.5