SOLUTION: How do I find all numbers for which the rational expression is undefined? For this rational expression -(18)/(11y). Please help I am confused!

Question 515319: How do I find all numbers for which the rational expression is undefined? For this rational expression -(18)/(11y). Please help I am confused!
Answer by oberobic(2304) (Show Source): You can put this solution on YOUR website!
You cannot divide by 0. Doing so is 'undefined'.
.
So any value of 'y' that would make the denominator = 0 cannot be allowed.
.
(18)/(11y) is undefined if
.
11y = 0
.
That only happens when y = 0
.
So, 'y' can take on any value from -infinity to +infinity, except for 0.
.

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