SOLUTION: I need help with something probably simple. I need to find all the numbers for which the rational expression is not defined on this problem 7 / 8v+9 . I am having the hardest tim

Question 238615: I need help with something probably simple. I need to find all the numbers for which the rational expression is not defined on this problem 7 / 8v+9 . I am having the hardest time with this and I am sure that it is simple for others. Thank You so much.
Found 2 solutions by jim_thompson5910, stanbon:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
The expression isn't defined when the denominator is equal to zero. So solve to get . So if , then the expression is undefined.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
find all the numbers for which the rational expression is not defined on this problem 7 / 8v+9
-----
That fraction is undefined when the denominator is zero.
When is it zero?
8v+9 = 0
when 8v = -9
when v = -9/8
----------------------------
The expression is undefined when v = -9/8
===============================================
Cheers,
Stan H.
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