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“WHAT’S THE POINT?!” Object of the game: To locate a secret point on the coordinate plane by asking as few questions as possible. How to Play: • Player A chooses a secret point on the coordinate plane. Each coordinate must be an integer from -10 to 10. • Player B asks questions that contain the words less than or greater than. Player A answers each question with only yes or no. • The players switch roles to complete one round of the game. How to Win: The player who names the point by asking fewer questions win the round. The first player to win 3 rounds wins the game. (2,-3) Secret Point Is x greater than or equal to 0? Yes THINK & DISCUSS You can use inequalities to describe regions of a coordinate plane. A linear inequality describes a region of the coordinate plane that has a boundary line. Every point in the region is a solution of the inequality. Each point on a solid boundary line is a solution Each point on a dashed boundary line is not a solution GRAPH y < 2x + 3 GRAPH y > 2x + 3 GRAPH 2x – 5y < 10 GRAPH y < -1 GRAPH 3 1 x- y£2 2 2 FOOD SHOPPING A pound of peanuts costs $2 and a pound of cashews costs $4. Suppose you intend to spend no more than $12 on peanuts and cashews for a party. How many pounds of each can do you buy? CLASSWORK/ HOMEWORK Pg 292 # 8 – 18