a) f(x) = 1/8x^2 + 2
g(x) = 1/8x^2 + 1
h(x) = 1/8x^2 - 2
k(x) = 1/8x^2 - 3
b) P(8,6) ➡️ h
6 = 1/8 * 8^2 + c
6 = 1/8 * 64 + c
6 = 8 + c
c = -2
Q(-4,3) ➡️ g
3 = 1/8 * (-4)^2 + d
3 = 1/8 * 16 + d
3 = 2 + d
d = 1
R(2, 2,5) ➡️ f
2,5 = 1/8 * 2^2 + e
2,5 = 1/8 * 4 + e
2,5 = 0,5 + e
e = 2
