SOLUTION: Which of the following statements is/are true? A. y = -1/2x + 3 represents a function. B. x2 + y2 = 25 represents a function. C. y = 2x2 + 7x + 3 represents a function. 1. Only

Algebra ->  Circles -> SOLUTION: Which of the following statements is/are true? A. y = -1/2x + 3 represents a function. B. x2 + y2 = 25 represents a function. C. y = 2x2 + 7x + 3 represents a function. 1. Only      Log On


   

Question 1082832: Which of the following statements is/are true?
A. y = -1/2x + 3 represents a function.
B. x2 + y2 = 25 represents a function.
C. y = 2x2 + 7x + 3 represents a function.
1. Only A 2. Only B 3. Only C
4. Only A and C 5. A, B and C
please assists I am totally lost hey
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Which of the following statements is/are true?
A. y = -1/2x + 3 represents a function.
If you mean (-1/2)x + 3, it's a function.
There is one y for any x, and vice versa.
---
If you mean -1/(2x) + 3, it's not.
==================================
B. x2 + y2 = 25 represents a function.
Use ^ (Shift 6) for exponents.
x^2 + y(2 = 25
Not a function.
More than one y for a given x ->> not a function.
More than one x for a given y ->> not a function.
===================
C. y = 2x^2 + 7x + 3 represents a function.
Not a function.
More than one x gives the same y.