bjr

f : triple => f(x) = 3x

g : quart => g(x) = 1/4x

h : carré => h(x) = x²

f(2) = 3*2 = 6

g(2) = 1/4 * 2 = 1/2 = 0,5

h(2) = 2² = 4

f(-9) = 3 * (-9) = -27

g(-9) = 1/4 * (-9) = -9/4 = -2,25

h(-9) = (-9)² = 81

f(x) = 3 * x

g(x) = x : 4

h(x) = x * x

f(-7) = 3 * (-7) = -21

g(1) = 1/4 * 1 = 1/4

h(-2) = (-2)² = 4

f(1/3) = 3 * 1/3 = 1

g(-4) = -4 * 1/4 = -1

h(0,5) = 0,5² = 0,25