Question

dada a função f(x)=-3x+1,o valor de f(-3) + f(2) e ?

Answer 1

f(x) = -3x + 1

f(-3) = -3 * -3 + 1
f(-3) = 9 + 1
f(-3) = 10

f(2) = -3 * 2 + 1
f(2) = -6 + 1
f(2) = -5

f(-3) + f(2) = 10 + (-5)
f(-3) + f(2) = 5

Answer 2

f(x) = - 3x + 1

Substituir: x = - 3 e x = 2;

f(3) = - 3(-3) + 1
f(3) =  9 + 1
f(3) = 10

f(2) = - 3(2) + 1
f(2) = - 6 + 1
f(2) = - 5

f(-3) + f(2)
= 10 +(- 5) = 10 - 5 = 5