Question

Se considera functia f : R → R,f(x)=(3m + 2)x + 2.Sa se determine parametrul real m astfel incat punctul A(-2,5) sa apartina graficului functiei. ???

Answer 1

Cum A(-2,5)€Gf==>f(-2)=5 ==>(3m+2)•(-2)+2=5 ==>(3m+2)•(-2)=3==> 3m+2=3:(-2)==>3m=3:(-2)-4:2==>-7:2=3m==> m=-7:6

Answer 2

f(x)==(3m+2)x+2
A(-2.5)
f(-2)=5
(3m+2)-2+2=5⇒
-6m-4+2=5⇒
-6m=5+2⇒
-6m=7
m=7/-6
sucees