Question

What did I do wrong?

Answer 1

Answer:

सत्यमेव जयते नानृतम सत्येन पंथा विततो देवयानः। येनाक्रमंत्यृषयो ह्याप्तकामो यत्र तत् सत्यस्य परमम् निधानम्॥

Answer 2

First find slope of each line using form y=mx+c
Then satisfy the condition
If m1=m2 then lines are parallel
If m1*m2=-1 then perpendicular
Else nothing