Question

Determinati coordonatele punctului de intersectie al dreptelor d1:-x+2y-6=0 si d2:2x-y-6=0

Answer 1

d1:-x+2y-6=0 si d2:2x-y-6=0

d1∩d2={A}; A(x;y)

=>-x+2y-6=0      |•2

     2x-y-6=0

-2x+4y-12=0

 2x-y-6=0     (+)

     3y-18=0; 3y=18

=>y=6

-x+2•6-6=0=> x=6

=> A(6;6)