Functions vs nonfunctions

Does the graph represent a function?

• Yes, because the vertical line test shows there are no repeating input values
• No, because the vertical line test shows there are repeating input values

Tags

CCSS.HSF.IF.A.1

CCSS.HSF.IF.B.5

Is this graph a function and how can you tell?

• Yes its a function cause it doesn't cross itself
• No it's not a function because it goes through the origin
• No it's not a function because the x value 4 has y values of  -2 & 2
• No it's not a function because the y value 4 has x values of  -2 & 2

Tags

CCSS.HSF.IF.A.1

CCSS.HSF.IF.B.4

CCSS.HSF.IF.B.5

Is this mapping a function and how can you tell?

• Yes its a function cause all the numbers have lines
• No it's not a function because there a 5 in both ovals
• No it's not a function because the x value 5 has y values of  2 & 9
• No it's not a function because the y value 5 has x values of  2 & 9

Tags

CCSS.8.F.A.1

Is this table a function and how can you tell?

• Yes its a function because there are not variables for missing numbers
• No it's not a function because the y value 4 repeated
• No it isn't a function because the x value 2 is repeated
• No it's not a function because the x value 5 has y values of  10 & 12

Tags

CCSS.8.F.A.1

Which of the following guarantees a set of ordered pairs will not be a function?

• An x value repeats
• A y value repeats
• An x value repeats and has different y values
• A y value repeats and has different x values

Tags

CCSS.8.F.A.1

Which of the following guarantees a mapping will not be a function?

• A x value repeats
• An y value repeats
• An x value has two or more arrows leaving it
• A y value has two or more arrows arriving at it

Tags

CCSS.8.F.A.1

How do you administer a vertical line test.

• You don't only doctor's are allowed to do those
• Draw lines straight across your graph and see if any hit the graph more than once
• Draw lines straight down your graph and see if any hit the graph more than once
• Check to see if the graph is a vertical line( straight up)

Tags

CCSS.8.F.A.1

Which graph does NOT pass the vertical line test?

• Graph 1
• Graph 2
• Graph 3
• Graph 4

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

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

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