suatu fungsi f(x) = 4x-1 ; f(a) = -7 dan f(1) = n . Nillai dari a-b adalah

f(x) = 4x - 1

⏩f(1) = b

4(1) - 1 = b

4 - 1 = b

3 = b ✔


⏩f(a) = -7

4x - 1 = -7
4x = -7 + 1
4x = -6
x = -6/4
x = -3/2 → Nilai a

Maka :
= a + b
= -3/2 + 3
= -3/2 + 6/2
= 3/2 ✔