Question

determine o valor afim f(x)=-3x+4 para:

a) x=1
b) x=1\3
c) x=0
d) x = k+1

Answer 1

a) f(x) = -3x +4

x = 1

f(x) = -3 + 4
f(x) = 1

a) x = $\frac{1}{3}$
f(x) = -1 + 4
f(x) = 3

c) x = 0
f(x) = 4

d) x = k + 1

f(x) = -3( k + 1) + 4
f(x) = -3k -3 + 4
f(x) = -3k + 1

Answer 2

 f(x)=-3x+4 para:
a) x=1 ==> f(1) = - 3(1) + 4 ==> - 3 + 4 ==> 1

b) x=1\3  ==> f(1/3) = - 3(1/3) + 4 ==> - 1 + 4 ==> 3
c) x=0   ==> f(0) = - 3(0) + 4 ==> + 4 
d) x = k+1   ==> f(k1) = - 3(k+1) + 4 ==> - 3k -3 + 4 ==> - 3k + 1