AFDA Function and Relations Review

- # of hours worked
- amount of your paycheck
Which is the dependent variable?

• hours worked
• paycheck amount

Tags

CCSS.6.EE.C.9

- the amount of money you save
- the number of days you can visit Hawaii
Which is the dependent variable?

• amount saved
• days in Hawaii

Tags

CCSS.6.EE.C.9

A local parking garage charges $5.00 for the first hour plus $1.50 for each additional hour or part of an hour. Write a relation where x represents the hours, and y represents the cost. Is it a function?

• y = 1.50x + 5
  Function
• y = 5x + 1.50
  Function
• y = 1.50x + 5
   Not a Function
• y = 5x + 1.50
  Not a Function

Evaluate each function for the given inputs.
For f(x) = -2x + 4,
find f(x) when x = -5

• f(-5) = -6
• f(-5) = -3
• f(-5) = 14
• f(-5) = 2

Tags

CCSS.HSF.IF.A.2

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)

Tags

CCSS.8.F.A.1

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

Tags

CCSS.8.F.A.1

You do lawn work for $13 an hour, but charge a $7.5 transportation cost. What rule represents your business model? 

• y=13x - 7.5
• y=13x + 7.5
• y=20.5x 
• y=7.5x + 13

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

f(x)=2x+1
If f(x)=4, what is the value of x?

• 3/2
• 2
• 1/2
• 4

Tags

CCSS.HSF.IF.A.2

Evaluate the function for the given value:

• -16
• -4
• -20
• 12

Tags

CCSS.HSF.IF.A.2

Given f(x) = -2x + 10 and f(x)= -10, find x. 

• x=0
• f(x)=0
• x=10
• f(x) = 10

Tags

CCSS.HSF.IF.A.2