Functions Review

What is the definition of function?

• Has inputs and outputs

• Every input has only ONE output

• Every output has only one input

• x-values and y-values

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

Is the graph pictured a function?

• Yes because it passes the vertical line test

• No because it does not pass the vertical line test

Is the graph pictured a function?

• Yes because it passes the vertical line test

• No because it does not pass the vertical line test

Evaluate f(-4) for the function f(x)=3x²-5

• f(-4) = 43
• f(-4) = 139
• f(-4) = -52
• f(-4) = -149

Tags

CCSS.HSF.IF.A.2

Which line has the greatest average rate of change on the graph? Why?

• Blue, it's average rate of change is $120 per month
• Red, it's average rate of change is $40 per month
• Blue, it's average rate of change is $160 per month
• Red, it's average rate of change is $80 per month

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

What is the domain of the pictured graph?

• x≤0

• x≥0

• x≤3

• x≥3

What is the value of f(0)?

• -2
• 2
• 4
• 0

Tags

CCSS.HSF.IF.A.2

Evaluate f(-2) + f(-1)

• -3
• 3
• 23
• -23

What is the RANGE of this graph?

• -7< y <5
• -7≤ y <5
• -3< y <1
• -3≤ y <1