Question

Fungsi f dirumuskan f(x)=3x +a jika f(5)=-10 berapa nilai a?

tolong dibantu yaa fast

Answer 1

F(x) = 3x+a

f(5) = -10
3.5+a = -10
15+a = -10
a = -10-15
a = -25

Answer 2

F(x) = 3x + a

f(5) = -10
f(5) = 3x + a = -10
3.5 + a = -10
15 + a = -10
a = -10 - 15
a = -25

pembuktian :
f(x) = 3x + a
f(5) = (3.5)+(-25)
= 15+(-25)
= -10