Question

Suatu Fungsi di tentukan dengan rumus F(x) = px+q jika F(-2)= 17 dan F(5)=-32,tentukan Berapakah F(12)

Answer 1

F(x) = px + q
f(-2) = -2p + q = 17
f(5) = 5p + q = -32
---------------------------(-)
-7p = 49
p = -7

5p + q = -32
q = -32 - 5p
q = -32 -5(-7)
q = -32 + 35
q = 3
f(x)= -7x + 3

f(12) = -7(12) + 3
f(12) = -81