An author's point of view refers to a. How the author feels b. What the author's intentions are c. Who the author is addressing d. Why the author is writing

A. how the auther feels

Explanation: all of the answers in a way could work but POV or point of veiw would be "your" or in this situation the authers prespective of it aka how they feel about it/ their opinion.

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