Search for: If the line ax+ by+ c = 0 is a tangent to the curve xy = 9, then If the line ax+ by+ c = 0 is a tangent to the curve xy = 9, then Aa>0, b>0,/ a<0,b<0Ba>0, b<0Ca<0,b>0Da<0,b<0 Fill Out the Form for Expert Academic Guidance!l Grade ---Class 1Class 2Class 3Class 4Class 5Class 6Class 7Class 8Class 9Class 10Class 11Class 12 Target Exam JEENEETCBSE +91 Preferred time slot for the call ---9 am10 am11 am12 pm1 pm2 pm3 pm4 pm5 pm6 pm7 pm8pm9 pm10pm Please indicate your interest Live ClassesBooksTest SeriesSelf Learning Language ---EnglishHindiMarathiTamilTeluguMalayalam Are you a Sri Chaitanya student? NoYes Verify OTP Code (required) I agree to the terms and conditions and privacy policy. Solution:We have,xy=9⇒y=9x⇒dydx=−9x2Let ax+ by+ c = 0 be a tangent to the curve xy = 9 at (x1, y1).Then dydxx1,y1= Slope of the line ax + by + c = 0⇒ −9x12=−ab⇒ x129=ba⇒ b a>0=> a and b are the same sign. (a > 0 and b > 0) or, (a < 0 and b < 0) Related content Nucleus Diagram for Class 9 Neuron Diagram Class 9 Human Heart Diagram Class 10 CBSE Class 7 Science Chapter 1 Nutrition in Plants MCQ Questions with Answers CBSE Class 9 English Worksheet – The Road not Taken 50+ GK Questions and Answers for Class 8 “Kabir Ki Sakhiyan” MCQ Questions for Class 9 Hindi with Answers Kshitij, Kritika, Sparsh, Sanchayan Bhag 1 CBSE Class 7 English Honeycomb Chapter 1 Three Questions MCQ Questions with Answers CBSE Class 9 English Beehive Book Poem 1 The Road Not Taken MCQ Questions with Answers MCQs Questions with Answers for Class 9 English Chapter 1 The Fun They Had