All Junior Cert Mathematics posts
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    2016 paper help! EmilyRosee

    an anyone help me on paper one question 7B?

    What do the symbols mean? So confused.

    Thanks!

    1. avatar image

      Alex F

      N is Natural Numbers

      These are whole positive numbers such as 1,2,3 etc,

      To graph this place a dot ( .) above the number

      Z is Intergers

      These are whole positive and negative numbers, such as -1, 1 etc

      To graph this place a dot above the number

      R is Real Numbers

      These are any type of number, positive, negative, decimals etc

      To graph this, draw a small circle (o) above the number and draw an arrow in the direction of the inequality

      Eg <4 means x is smaller then 4, so draw an arrow in the left

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      Me

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