diketahui f(x) = -6 + 2x. nilai f(-3)+f(-1)

f (x) = -6 + 2x
f (-3) + f (-1) = ..?
Jawab :

f (x) = -6 + 2x
f (-3) = -6 + 2 ( -3 )
f (-3) = -6 + ( -6 )
f (-3) = -12

f (x) = -6 + 2x
f (-1) = -6 + 2 ( -1 )
f (-1) = -6 + ( -2 )
f (-1) = -8

Maka,
f (-3) + f (-1)
= -12 + ( -8 )
= -12 - 8
= -20

●f(x) = -6 + 2x
f(-3)= -6 + 2.(-3)
= -6 + -6
= -12

●f(x)= -6 + 2x
f(-1)= -6 + 2.(-1)
= -6 + -2
=-8

■f(-3) + f(-1) = -12 + -8
= -20

#ini mnrt saya