4.1-4.4 Review C3

Which equation represents the graph?

• y = 3x + 15
• y = 1/5 x + 15
• y = -1/5 x + 3
• y = 15x + 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

Which graph is linear?

• Graph A
• Graph B
• Graph C
• Graph D

The following is not a function because...

• There are two values that equal 2.

• x = 10 and x = 40 has two values each.

• In the f(x) column, the 5 repeats.

• This table is actually a function.

A store receives 7 new movies per week. Write an equation to find the number of movies "y" the store receives after "x" weeks.

• y = 7x
• x = 7y
• x + 7 = y

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 this graph a function or not a function? 

• Function
• Not a Function

Is this is a function or not a function?

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function