Question 58517
F(X)=3X-9
F(0)=3*0-9
F(0)=-9
F(2)=3*2-9
F(2)=6-9
F(2)=-3
F(-5)=(3*-5)-9
F(-5)=-15-9
F(-5)=-24
F(3Z)=3(3Z)-9
F(3Z)=9Z-9
F(3Z)=9(Z-1)