Fungsi g dirumuskan dengan g(x)=ax+b. Jika g(2)=1 dan g(4)=5, nilai dari g(10)=

4a + b = 5
2a + b = 1
(4a-2a) + (b-b) = 5-1
2a = 4 a = 2
2a + b = 1 —> 2×2 + b = 1 b = 1 – 4 = -3
g(10) = 10a + b
= 10×2 + (-3)
= 20 – 3
= 17