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iceskater726
hey!

take the group of numbers and put them from least to greatest. then, take the lowest number and subract that from the highest number.

for example, if i have the numbers 2,7,4,5
i would put them in order (least to greatest), which would be: 2,4,5,7
then, you subract 7-2, and that equals 5 :)

hope this helped!! have a great day / night!
trccater54
In the set of ordered pairs {(-2, 0), (0, 6), (2, 12), (4, 18)}, the domain is the set of the first number in everypair (those are the x-coordinates): {-2, 0, 2, 4}. Therange is the set of the second number of all the pairs(those are the y-coordinates): {0, 6, 12, 18}.  There you go :)

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