Question

Determine o valor da função afim f(x) = -3x +4 para:
a) x= 1
b) x= 1/3
c) x= 0
d) x= k+1

Answer 1

 f(x) = - 3x + 4
 f(1) = -3 . 1 + 4
f(1) = - 3 + 4
f(1) = 1
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f(x) = - 3x + 4
f(1/3) = - 3 . 1/3 +4
f(1/3) = -1 + 4
f(1/3) = 3
==================
f(x) = -3x + 4
f(0) = -3 . 0 + 4
f(0) = 0 + 4
f(0) = 4
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f(x) = - 3x + 4
f(k + 1) = 3(k + 1) + 4
f(k + 1) = 3k + 3 + 4
f(k + 1) = 3k + 7