Alg 5/20 Assignment

What is the algebraic expression for                  "the sum of n and 9"?

• n - 9
• n + 9
• n/9
• 9n

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 mapping a function or 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)

• 8

• -24

• 24

• -22

• 21

• -21

• -3

• 3

What operation would you perform first and then second when solving for m in the following equation?

10 + 7m = 17

• subtract 10, divide by 7

• divide by 7, subtract 10

• multiply by 7, add 10

• add 10, multiply by 7

Solve for x:

2x - 3 + 4x = 27

• x = 12

• x = 4

• x = 5

• x = 15

Solve for a:

-3a + 8 = 14

• a = -2

• a = -7.5

• a = 2

• a = 6