Posted by **Suzannah** on Thursday, October 10, 2013 at 9:23pm.

What does "c ≠ 0" mean? I've heard the "≠" sign means "does not equal." Does this mean that c ≠ 0 means that "(variable) does not equal zero"? What is it's usage?

- Math Question -
**Reiny**, Friday, October 11, 2013 at 12:24am
yes, it means "not equal"

suppose you had

y = 4/(x-5) and you wanted the domain of the function

that is, what values of x could I use ??

Well, we could use any real number for x, except 5

and we would write it as:

x = any real number, x ≠ 5

## Answer this Question

## Related Questions

- Math vectors - Verify using an example that a(b+c) is not equal to ab+ac. (This ...
- Math 9th grade - x^2 + 5x +6/ x^2 - 3x -10 How do I do this? Is it asking me to ...
- MATH I - x^2 + 5x +6/ x^2 - 3x -10 How do I do this? Is it asking me to divide...
- Quantum Physics - Let f:{0,1}->{0,1} with f(101)=1 and f(x)=0 for x ≠ ...
- Quantum Physics - Let f:{0,1}^3→{0,1} with f(101)=1 and f(x)=0 for x≠...
- Algebra - Simplify. (3/5a)*(1/a^2) • 3/5a^2; where a ≠ 0 • 3/5a^2 • 3/5a^3...
- Algebra - Simplify. x/(7x+x^2) • 1/(7+x); where x ≠-7 • 1/(7x); where x&#...
- 7th grade math Ms.Sue please! - Use cross products to see if each pair of ratios...
- Precalculus - Would someone kindly verify these answers~ Thank you...
- Math (Algebraic Manipulation) - An operation produces A−1/A from a ...