SOLUTION: Find all numbers for which the rational expression is undefined. 1/7y+6

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Question 464884: Find all numbers for which the rational expression is undefined. 1/7y+6
Answer by algebrahouse.com(1659) About Me  (Show Source):
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"Find all numbers for which the rational expression is undefined. 1/7y+6"

For an expression to be "undefined", the denominator is equal to 0.
You need to find what value of y makes the denominator 0.

7y + 6 = 0 {set denominator equal to 0, to solve for y}
7y = -6 {subtracted 6 from both sides}
y = -6/7 {divided both sides by 7}

-6/7 makes the rational expression undefined {because the denominator would be 0}

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