1. {(-2, 3), (-1, 2), (0, 2), (-2, 9)} a. Is it a function? Explain. b. What is the domain? c. What is the range? 2. Bowling costs $4.50 per game. Shoe.

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1. {(-2, 3), (-1, 2), (0, 2), (-2, 9)} a. Is it a function? Explain. b. What is the domain? c. What is the range? 2. Bowling costs $4.50 per game. Shoe rental costs $3.75. Write a function that models the total cost of games and shoe rental. Evaluate the function for 10 games.

1. {(-2, 3), (-1, 2), (0, 2), (-2, 9)} a. Is not a function. When x =-2, there are TWO y values. b. Domain: {-2, -1, 0} c. Range: {2, 3, 9}

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CANNOT DIVIDE BY ZERO!!

When slope is undefined, the graph is a vertical line. Parallel line would also be vertical with a slope that is undefined. Perpendicular line would be horizontal with a slope that is 0.

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 Explain why you cannot answer the following question. If y = 0 when x = 0, what is x when y = 13?