Question 11If $(a,b)$ and $(c,d)$ are two points on the line whose equation is $y=mx+k,$ then the distance between $(a,b)$ and $(c,d),$ in terms of $a,$ $c,$ and $m,$ is$|a-c|\sqrt{1+m^2}$$|a+c|\sqrt{1+m^2}$$\frac{|a-c|}{\sqrt{1+m^2}}$$|a-c|(1+m^2)$$|a-c||m|$