Pertanyaan
diketahui f(x) = ax+b , f(-1)=7 dan f(3)=-5 . nilai f(-6) adalah
Ditanyakan oleh: USER5131
64 Dilihat
64 Jawaban
Jawaban (64)
f(-1) = -a +b =7
f(3) = 3a + b = -5
eliminasi b
-a-3a = 7- (-5)
-4a = 12
-a = 3
a = -3
3a + b = -5
3. -3 + b =-5
-9 + b = -5 ,;; b = -5+9 = 4
f (-6) = -6.-3 + 4
= 18 + 4 = 22
f(3) = 3a + b = -5
eliminasi b
-a-3a = 7- (-5)
-4a = 12
-a = 3
a = -3
3a + b = -5
3. -3 + b =-5
-9 + b = -5 ,;; b = -5+9 = 4
f (-6) = -6.-3 + 4
= 18 + 4 = 22