Suatu fungsi dirumuskan f(x)= 9-3x.Jikaa f(p) = 15,nilai p adalah..... mohon bantuannya yaah kaak:) wassalam.

Question

Matematika Diposting : 2014-10-15 Diupdate : 2022-08-29 salsacp

Pertanyaan

Suatu fungsi dirumuskan f(x)= 9-3x.Jikaa f(p) = 15,nilai p adalah.....

mohon bantuannya yaah kaak:)

wassalam.

Answer 1

f(x)=9-3x
=> f(p) = 9-3p
=> 15 = 9-3p
=> 15-9 = -3p
=> 6 = -3p
=> p = 6 : -3
=> p = -2

Answer 2

f(p) = 9-3x
-3p +9 = 15
-3p = 15 - 9
-3p = 6
p= 6 : -3
= -2