Question

3 - Dada a função f(x)= 3/5x - 5, calcule:
a) f(-1) b) f(1/2) c) f(- 3)

Answer 1

a) f(-1)= 3/5x-5 ∴ f(-1)= 3/5(-1) -5= -3/5-5= -28/5 b) f(1/2)= 3/5.1/2 -5 ∴ 3/10-5 = 3-50/10= -47/10 c) f(-3)= 3/5(-3)-5 = -9/5-5= -9-25/5 -9-25/5= -34/5