Friday 3/19 Asynchronous Work

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.

Is this mapping a function or not a function? 

• Function
• Not a Function

Is this table a function or not a function? 

• Function
• Not a Function

Which set of points 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)

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.

What is the definition of function?

• Has inputs and outputs

• Every input has exactly ONE output

• Inputs have different outputs every time

• x-values and y-values

Is this a function?

• Yes, it is a function.

• No, it is not a function.

Which graph does NOT pass the vertical line test?

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

Using the vertical line test. Is this a function?

• Yes

• No

Does the blue line represent a function?

• Yes, because vertical lines are always functions.

• No, it is not a function because no one likes the color blue.

• No, because vertical lines don't pass the vertical line test.

• Yes, because it passes the horizontal line test.