Functions test review

Which equation matches the table?

• y = x + 5
• y = 5x
• y = x - 5
• x = y - 5

Which equation matches the table?

• y = 3x + 9
• y = x + 9 
• y = x + 3
• y = 12x - 3

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 mapping a function or not a function? 

• Function
• Not a Function

Is this graph a function or not a function? 

• Function 
• Not a Function

• Function
• Not a Function

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)

Suppose that a bike rents for $4 plus $1.50 per hour. Write an equation in slope-intercept form that models this situation.

• y = 4x + 1.50
• y = 1.50x + 4

The graph shows the weight of a bucket as it is filled with sand. What is the weight of the empty bucket?

• 0 pounds

• 1 pound

• 2 pounds

• 6 pounds

Dionne pays a fixed fee plus an hourly rate to rent a boat. The table below shows how much Dionne paid for the boat. What was Dionne’s hourly rate to rent the boat?

• $27

• $15

• $20

• $12