HAI ĐƯỜNG THẲNG Y = (K+1)X + 3; Y = (3 – 2K)X + 1 SONG SONG KHI3243...

4) - DE KT HINH 9 CHUONG 3 CO MA TRAN DAP AN CHUAN
DE KT HINH 9 CHUONG 3 CO MA TRAN DAP AN CHUAN
4) Hai đường thẳng y = (k+1)x + 3; y = (3 – 2k)x + 1 song song khi

3

2

4

2

D. k =

3

C. k =A. k = 0 B. k =