Unit 2 Functions Review

• Function

• Not a Function

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

Choose the relation for this table, graph and mapping.

• {(-1,0), (0,1), (2,1), (3,4)}

• {(-2,-1), (-1,1), (2,3), (3,4)}

• {(-4,5), (-2,3), (0,1), (2,-1)}

• {(-2,-1), (-1,0), (0,-1), (2,-1)}

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

A local parking garage charges $5 for the first hour and $1.50 for each added hour. Write an equation, where x is the hours and y is the cost.

Is this a function?

• y = 1.50x + 5

  Function

• y = 1.50x + 5

  Not a Function

• y = 5x + 1.50

  Function

• y = 5x + 1.50

  Not a Function

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

What is the domain of a function?

• The set of all x-values

• The set of all y-values

Write the equation for the line in slope-intercept form.

• y= -1x+3
• y= 4x+3
• y=1/4x+3
• y= -4x+3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Which graph represents x=2?

• A
• B
• C
• D

Write the equation of the line.

• y = -2/3x + 4
• y = 2/3x + 4
• y = 3/2x + 4
• y = -3/2x + 4

For babysitting, Nicole charges a flat fee of $3, plus $5 per hour. Write an equation for the cost, C, after h hours of babysitting. 

• C = 5h + 3
• C = 3h + 5
• H = 5c + 3
• H = 3c + 5

Tags

CCSS.HSF-BF.A.1A

What is the equation of a line with a slope of 2 and a y-intercept of -5?

• y = 5x - 2

• y = 2x - 5

• y = -2x - 5

• y = 2x + 5

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3