Which is a feature of dialect standard pronunciation and definitions informal language used in a specific location universal language not specific to one group formal language used to describe a certain topic

Informal language used in a specific location.

Dialect is a variety of a language, and it is distinguished from the standard language by different grammar and vocabulary. Dialects are often particular in their geographical distribution (only spoken in a certain region) and/or in the speakers' social background or class. While dialects of the same language can vary significantly, they are still compatible with one another at their core.

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

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