a)
f:R->R
f(x)=3x-2
Gf ∩ Ox -> f(x)= 3x-2 =0 -> 3x= 2 -> x= 2/3 -> A(2/3 ; 0)
Gf ∩ Oy -> x=0 -> f(0) = 3 ori 0 -2 = -2 -> B(0 ; -2)
g:R ->R
g(x)=2x-1
Gg ∩ Ox -> g(x) = 2x-1=0 -> 2x=1 -> x= 1/2 -> C(1/2 ; 0)
Gg ∩ Oy -> x=0 -> g(0) = 2 ori 0 -1= -1 -> D(0 ; -1)
acum le reprezinti pe grafic
b) Gf ∩ Gg = M(a ;b)
M(a;b) ∈ Gf -> f(a)= 3a-2=b
M(a;b) ∈ Gg -> g(a) = 2a-1=b
3a-2=b /inmultesti cu -1
2a-1=b
-3a+2= -b
2a-1=b
-a+1=0 -> -a=-1 -> a=1
b=1
-> M(1;1)
Atat , sper ca te-am ajutat ;)