2007-12-03 13:31:31 · 4 answers · asked by Lana 1 in Science & Mathematics ➔ Mathematics
(x - 4) / (3x + 9) = N / D
Undefined if D = 0
3x + 9 = 0
x = - 3
2007-12-04 03:47:36 · answer #1 · answered by Como 7 · 3⤊ 0⤋
Hi,
Recall a function is undefined where the denominator is equal to zero. This is so because a value x divided by zero can not be determined.
Therefore we say:
3x + 9 = 0
Subtract 9 from both sides:
3x = -9
Divide by 3 on both sides to get:
x = -9 / 3 <==== FINAL ANSWER
I hope that helps you out! Please let me know if you have any other questions!
Sincerely,
Andrew
2007-12-03 13:58:47 · answer #2 · answered by The VC 06 7 · 0⤊ 0⤋
when denominator is 0
3x+9=0
x=-3
2007-12-03 13:35:14 · answer #3 · answered by someone else 7 · 0⤊ 1⤋
-3
2007-12-03 13:34:41 · answer #4 · answered by Anonymous · 0⤊ 1⤋