SOLUTION: In which of the following is y a function of x a. 3y+2x-9=0 b. x+y^2=5 c. x^2+y^2=25 d. noone of these

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Question 36951: In which of the following is y a function of x
a. 3y+2x-9=0
b. x+y^2=5
c. x^2+y^2=25
d. noone of these
Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!
In which of the following is y a function of x
a. 3y+2x-9=0.....3Y=9-2X.....Y=(9-2X)/3..WE GET UNIQUE VALUE FOR Y .SO IT IS A FUNCTION
b. x+y^2=5.....Y^2=5-X....Y=+ OR - SQRT(5-X)..WE DO NOT GET UNIQUE VALUE FOR Y .SO IT IS NOT A FUNCTION
c. x^2+y^2=25....Y^2=25-X^2....Y=+ OR - SQRT(25-X^2)..WE DO NOT GET UNIQUE VALUE FOR Y .SO IT IS NOT A FUNCTION
d. noone of these....NOT CORRECT....A..IS THE ANSWER