Question

Di ketahui f(x) = ax + 6, f(-2) = 10,maka f(5) adalah...

Answer 1

F(-2) = -2a + 6 = 10
-2a = 10-6
a = 4/(-2) = -2
f(x) = -2x + 6
= -2(5) + 6
= -10 + 6
= -4

Answer 2

F(-2) = 10
10 = a(-2) +6
10 = -2a + 6
2a = -4
a = -2

f(5) = -2(5) +6
f(5) = -10 + 6 = -4