Grade 12th passAlgebraThe sum of slopes the line x²-2cxy -7y²= 0 is 4times their product c has the value Sneh Kumari 8 Years agoGrade 12th pass
Arun8 Years agoLet the lines areL1:y = m1xAnd L2:y = m2xThen m1 + m2 = -2c/7m1* m2= -1/7Givenm1 +m2 = 4 m1*m2Put the values and you will get answeras c = 2