SOLUTION: If W,X,Y,Z are the first four terms of an arithemetic sequence , express y in term's of W,X and Z

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Question 1080684: If W,X,Y,Z are the first four terms of an arithemetic sequence , express y in term's of W,X and Z
Answer by ikleyn(52790) About Me  (Show Source):
You can put this solution on YOUR website!
.
Y = %28X%2BZ%29%2F2.

See the lesson
    - One characteristic property of arithmetic progressions
in this site.


There is a bunch of lessons on arithmetic progressions in this site:
    - Arithmetic progressions
    - The proofs of the formulas for arithmetic progressions
    - Problems on arithmetic progressions
    - Word problems on arithmetic progressions
    - Mathematical induction and arithmetic progressions
    - One characteristic property of arithmetic progressions
    - Solved problems on arithmetic progressions


Also,  you have this free of charge online textbook in ALGEBRA-II in this site
    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic "Arithmetic progressions".