Fungsi f dirumuskan dengan f (x)=8x-5.nilai f (-1)-f (3)=..

f(x) = 8x - 5
f(-1) = 8(-1) - 5 = -8 - 5 = - 13
f(3) = 8(3) - 5 = 24 - 5 = 19
f(-1) - f(3) = -13 - 19 = - 32