Piecewise Defined Functions

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 Which function should you use to evaluate f(x) when x = 4

• f(x) = x-2

• f(x) = 2x + 1

• f(x) > 0

• f(x) = 4

Use the graph to evaluate f(5)   {HINT: when x = 5 what does y equal?}

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Use the graph to evaluate f(9)   {HINT: when x = 9 what does y equal?}

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Use the graph to evaluate f(2)   {HINT: think back to graphing inequalities on the number line -- should you pick value for open circle or closed circle?}

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Use the graph to evaluate f(5)

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Use the graph to evaluate f(-2)

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How much does it cost to rent the Karaoke machine for 3 days?

• $50
• $100
• $150
• $175

If you have $75, how many days can you rent the Karaoke machine?

• 0 days
• 1 day
• 2 days
• 3 days