Question

Jawabnya yang nomor 7 aja ya

Answer 1

7. f(x)=-3x+6
     f(-3)=-3(-3)+6=9+6=15
     f(2)=-3(2)+6=-6+6=0

f(a)=-3a+6
-9=-3a=6
-3a+6=-9
-3a=-9-6
-3a=-15
a=-15/-3
a=5