Q3:M9/10" Function and Function Representation

Is this mapping a function or not a function? 

• Function

• Not a Function 

Is the relation a function? 
{(4,5), (4,-7), (4,2), (4,0), (4,9)}

• Yes

• No

Is this table a function or not a function? 

• Function

• Not a Function

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.

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.

For the function f(x) = -3x + 3 find f(0).

• 0

• -3

• 3

• -1

Evaluate f(-2) if f(x) = x²+ 3.

• -1

• 1

• 7

• -7

Solve for f(5):
f(5) = -x + 4

• 9 

• 1

• -1

• -9

Which graph does NOT pass the vertical line test?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

Is this a function?

• Yes

• No

• Let me ask my dog...

• Why are there letters in math?