Question

if the point A (K+1,2K) , B(3K,2K+3) AND C (5K-1,5K) ARE collinear . find the value of k

Answer 1

$solving \: the \: formula \: \: \\ mod \: (x1 \times (y2 - y3) + x2 \times (y3 - y1) + x3 \times (y1 - y2) \\ then \: we \: get \: k \: = 0and \: \frac{ - 5}{2}$