intro Relations and Functions of Ordered Pairs reminder 270 One quarter for 15 minutes of parking is an example of real-life paired data. reminder 270 Review: Ordered pairs have an x-coordinate and y-coordinate. attention rectangle Get ready to record these on your study guide. reminder 270 Domain: the set of x-coordinates Which are the y-values of the relation? 1;4;6 1;3;5 2;4;6 1;3;5 attention rectangle 280 Here comes an important definition… reminder 270 This relation is NOT a function. comment 10 185 200 14 Does each x-coordinate have exactly one y-coordinate? comment Is each x-coordinate paired with only one y-coordinate? Now try this one. Is {(0,2), (4,5), (0,3)} a function? yes no no One more. Which IS a function? { (-2,5), (-3,6), (-5,4) } { (-3,2), (-5,5), (-3,1) } { (-2,5), (-3,6), (-5,4) } prompt 460 10 Review the new vocabulary and practice on your own.