ˣ=[tex]y=-3 4 x-12[/tex]

= = - 34 - 12

x=y=−34−12

{ = - 34 - 12 = - 34 - 12

{x=−34−12y=−34−12

{ = - 46 = - 46

{x=−46y=−46

( , ) = ( - 46 , - 46 )

(x,y)=(−46,−46)

- 46 = - 46 = - 34 - 12

−46=−46=−34−12

- 46 = - 46 =- 46

−46=−46=−46

( , ) = ( - 46 , - 46 )