65.91 where does the hundredths sit

You start at the place to the left of the decimal place. That is your ones. Here, we are going to count to the right so it would go

Ones   Tenths hundreths

  If You were to go lft, you would do Ones, tens, hundreds, etc.

So the 1 is in the hundredths place! Hope this helps. 

The answer will be y=-5+0 because the slope is -5 and the it has to go through y-axis 0