suatu fungsi dirumuskan f(x)=ax+b .jika f(-2) = 14 dan f(3)=-1,maka nilai a dan b adalah

Dik. F(x) = ax + b, F(-2) = 14 & F(3) = -1
Dit. nilai a dan nilai b?

Jawab...

# f(x) = ax + b

# f(-2) = -2a + b = 14
# f(3) = 3a + b = -1
-------------------- -
@ -5a = 15
@ a = 15/-5
@ a = -3

b : f(3) = 3a + b = -1 (Masukan nilai a)
@ 3(-3) + b = -1
@ -9 + b = -1
@ b = 9 - 1
@ b = 8

Semoga membantu.. ^_^