# Functions

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• Man! functions are tough I don't know the first step into solving one!
• Hey, Kyle you called? let me guess you don't understand how a noob beat you in Fornite?﻿
• Hey and no Ava I need help with functions can you help?﻿
• None of the numbers repeat﻿
• Well function is a relation of one set of inputs so if you have -2, -1, 0, 1, and 2 for the value of X(Domain) and you have -2,2,6,10,14 for Y(Range) you can see clearly that none of the numbers repeat so it is a function
• X -2 -1  0  1  2﻿
• Y -2  2  6  10  14﻿
• None of the numbers repeat﻿
• So what if we have Order pairs or even Mappings?﻿
• All of them still follow the same rule if not their not functions﻿
• 1 2 3 4
•  3  0 -3 -6
• ﻿
• 9  8 7 6
•   -1    0      2﻿
• x y      x y    x y     x y
• Nice, so it all has to do with looking at the X and Y. Functions are not so bad after all﻿
• (2,3),(-4,5),(2,7),(7,-2)﻿
• Order pairs are like tables either label the X and Y or make a table as for Mappings you check on the domain side if more than 1 line goes to one number it's not a function.﻿
• x y      x y    x y     x y
• (2,3),(-4,5),(-2,7),(7,7)﻿
• ﻿OoF ok thanks Ava
• Now practice 'cause i wanna see your growth unlike your kills in fortnite﻿
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