Question

Fungsi h didefinisikan dengan rumus h (x) = ax + b.
Jika h (5) = -8 dan h (-2) = 13, nilai h (3) adalah

Answer 1

H(5) - h(-2) = (5a+b) - (-2a+b) = -8-13
7a = -21
a = -21/7 = -3
5a+b = -8
5(-3) + b = -8
b = -8+15 = 7

h(3) = -3(3) +7 = -(9-7) = -2