Question

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5 - Dada a função afim f(x) = - 5x - 5, qual o valor de f(0) + f(-1) + f(-2) + f(-3)? *
15
-5
-10
10
5

Answer 1

f(x) = - 5x - 5

f(0) = - 5 . 0 - 5

f(0) = - 0 - 5

f(0) = - 5

f(-1) = - 5 . (-1) - 5

f(-1) = 5 - 5

f(-1) = 0

f(-2) = - 5 . (-2) - 5

f(-2) = 10 - 5

f(-2) = 5

f(-3) = - 5. (-3) - 5

f(-3) = 15 - 5

f(-3) = 10

f(0) + f(-1) + f(-2) + f(-3) = - 5 + 0 + 5 + 10 = 0 + 10 = 10