Question

O valor de K para que a equação KX-Y-3K+6=0 represente a reta que passa pelo ponto (5,0) é:
a)3
b)-9
c)9
d)-3
é)-6

Answer 1

SUBSTITUINDO PONTO (X=5,Y=0) NA EQUAÇÃO -->   K5-0-3K+6=0
                                                          ORGANIZANDO -->  5K-3K+6=0
                                                                                            2K+6=0
                                                                                            K=-6/2
                                                                                             K=-3