SOLUTION: Which of the following is a function?
I. {(3,5)(4,7)(3,6)} II. y = -x^2. III. y - 3 = 0
A. I
B. II
C. III
D. I and III
E. II and III
Algebra.Com
Question 1132552: Which of the following is a function?
I. {(3,5)(4,7)(3,6)} II. y = -x^2. III. y - 3 = 0
A. I
B. II
C. III
D. I and III
E. II and III
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
To be a function, for a given value of ,
there is a unique value of
I. is not a function since gives
2 different values for
-------------------------------
II. and III. are both functions, because if I pick a
value for , it returns me only 1 value for
( in the case of III. the value returned for any never
changes, always , but it is always a unique value. )
E. II. and III. is the answer
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