Question

Qual o valor de K na funçao f(x)=(K-1)x-2k+1 tal que f(-1)=2?

Answer 1

Substitui a função
$2=(K-1)*(-1)-2k+1\\2=-K+1-2K+1\\2=-3K+2\\-3K=0\\K=0$
Prova real
$F(x)=-x+1$
quando x= -1
$F(-1)=2$