SOLUTION: I need help with Algebra question concerning "domain" examples find the domain of the function; y=1/2x y=1/x+3 Thanks, Tony

Question 12885: I need help with Algebra question concerning "domain" examples
find the domain of the function;
y=1/2x
y=1/x+3
Thanks, Tony
Answer by AdolphousC(70) (Show Source): You can put this solution on YOUR website!
When your dealing with domain of functions, and you have fractions you are looking for any place where the denominator of that fraction would be equal to zero. These are the places that CAN NOT be part of your domain since division by zero is illegal.
For example, what values of x would cause you to divide by 0?
When X = 0, so the domain of would be any number EXCEPT 0

If you have what number would cause you to divide by zero?
If you are unsure, set the denominator equal to zero and solve.
subtract 5

So the domain of would be any number EXCEPT -5
Hope that helps, Mr. C

RELATED QUESTIONS
I have a question that i need help with: Sketch the graph of y=x^3-3x^2+1/x^3 1.... (answered by user_dude2008)

Consider the function f(x)=√(x^2-1) What is the domain for f(x)? Solve the... (answered by Boreal)

I need help with this problem: Find the domain and range of the function y = sin... (answered by Boreal,rothauserc)

Without graphing state the domain and range for the following equations. a) y=2(4x+1)+3 (answered by ikleyn)

Help me please. I need to find the domain of the function f (x) =... (answered by scott8148)

I have a question concerning exclusion, domain and function. THe question reads: What... (answered by Fombitz)

Need help with this question. Find the domain and range of the reation R= {(x,y)| y<= 2x, (answered by stanbon)

I understand the function of a domain when f(x) is given along with the equation, but I... (answered by venugopalramana)

I am helping my son prepare for his algebra exam and have a couple of questions. 1) What... (answered by longjonsilver)