Question

How can I convert d-lyxose Fischer projection to bond line view?

Answer 1

The Fischer projection of D-lyxose is

To convert the Fischer projection to a bond line formula you just draw a zig-zag line of five carbon atoms.

Then you put an aldehyde group at C-1 and an OH group on each of the other carbon atoms. You get

Note that the bond line formula gives no stereochemical information.