Question

Diketahui F (x) = ax + 7 , jika F (3) = 19 tentukan nilai a nya!!
tolong dibantu ya...

Answer 1

F (x) = ax + 7
F (3) = a3 + 7
19 = a x 3 + 7
a x 3 = 19 7
a x 3 = 12
a      = 12 / 3
a      = 4

Answer 2

F(x) =ax+7
F(3)=a(3)+7
19=3a+7
3a=19-7
3a=12
A=12/3
A=4