Question

As retas 3×+2y-1=0 e -4×+6y-10=0 sao ?

Answer 1

r:3x+2y-1=0
mr:-3/2

s:-4x+6y-10=0
ms:4x/6  ms:2/3

mr.ms:-3/2.2/3= -1

 por fim as retas r e s sao perpendiculares