Functions

Evaluate the 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

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)

Evaluate the function for the given value:

• -16
• -4
• -20
• 12

Consider the function:{(3,11),(4,18),(5,27),(6,38)}  What is the Domain?

• {4,11,5,18}
• {3,11,4,18}
• {3,4,5,6}
• {11,18,27,38}

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.
• Yes, because each x-value has only one y-value paired with it.
• No, because the x-value 11 has two y-values pair with it.
• No, because each x-value has only one y-value paired with it.

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.

• f(x) = 1.50x + 5

• f(x) = 5x + 1.50

• f(x) = 5x

• f(x) = 1.5x

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

• f(x) = 13x - 7.5

• f(x) = 13x + 7.5

• f(x) = 20.5x

• f(x) = 7.5x + 13

Consider the function:{(3,11),(4,18),(5,27),(6,38)}  What is the Domain?

• {4,11,5,18}
• {3,11,4,18}
• {3,4,5,6}
• {11,18,27,38}

• Function
• Not a Function

What is the RANGE of this graph?

• -7 < x < 5

• -7 ≤ y < 5

• -3 < x < 1

• -3 ≤ y < 1