I WILL GIVE YOU BRAINLIEST! show work

Answer:
im like 75% sure its 3/5
Step-by-step explanation:
hope that helps :)
so first i did y2-y1 over x2-x1 to solve the slope for line M
which gave me
[tex]\frac{3-6}{6-1}[/tex]
which equals -3/5
then to find the perpendicular to that i just took away the negative which should make it the postive version of m making it perpendiular.