Answer:
5 5/6
Tell me if u got it right
Hello There!
Your answer is In Image Provided.
I have also included steps I made for a question I answered similar to this.
a = ( 1 , 6 )
b = ( 4 , 9 )

Now just need to put the coordinates in the above equation :



And we're done...♥️♥️♥️♥️♥️