If the point (p+1, p), (p, p+1), (p-1, p-2)are collimeart then find the value of p

If the point (p+1, p), (p, p+1), (p-1, p-2)are collimeart then find th

1.	If the point (p+1, p), (p, p+1), (p-1, p-2)are collimeart then find the value of p
Answer» Slope between (p+1,p), (p, p+1) = slope between (p, p+1), (p-1,p-2) (p+1-p)/[p-(p+1)] = [(p-2)-(p+1)]/(p-1-p)1/-1 = -3/-1-1 = 3