Why is this excerpt a good example of a feature often found in a myth?

Why is this excerpt a good example of a feature often found in a myth? It features a reference to the earth. It features a reference to the sky. It features a reference to the origin of the tribe.

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because it's a cool name

explanation:

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4