Functions Review

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 the graph pictured a function?

• Yes
• No

Is the graph pictured a function?

• Yes
• No

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

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

Using the functions f(x)=-4x+11 and g(x)=5x², evaluate g(f(3))

• g(f(3))=-10
• g(f(3))=5
• g(f(3))=-169
• g(f(3))=-5

Using the graph, find the average rate of change at which this person was traveling. 

• 80 miles per hour
• 40 miles per hour
• 20 miles per hour
• 160 miles per hour

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

What is the domain of the given function y=5x+10?

• All real numbers except 5
• x>10
• All real numbers
• y>10

What is the domain of the pictured graph?

• x<0
• x>0
• x<3
• x>3

• Function
• Not a Function