Test: Lessons 3.1 - 3.3 Functions

What is happening in the graph between 30 and 40 minutes?

• Sarah is accelerating

• Sarah is not moving

• Sarah is slowing down

• Sarah is travelling at a constant speed

Which graph does NOT pass the vertical line test?

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

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)

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.

What is the range shown in the table?

• {-2, 3, 7}
• {-2, 3}
• {1, 2, 2, 3, 4}
• {1, 4}

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

Is this graph a function or not a function? 

• Function 
• Not a Function

Which of the following situations
corresponds to this graph?

• A car, accelerates from a stop,travels at a constant speed, slows,
  and then travels at a slower speed.
• An airplane travels at a constant
  speed then decelerates to a slower speed.
• An athlete warms up by walking
  around the track, runs, then jogs.
• A bicyclist accelerates, travels at a
  constant speed, then slows to a
  stop.

Evaluate f(2):

f(x)=3x+1

• 7

• 9

• 11

• 13

If f(x)=2(3^x)+1, what is the value of f(2)?

(Substitute and be careful with order of operations)

• 19

• 37

• 13

• 20