Write an equation perpendicular to the line y=1/4x -9 and passes through (1,1)can someone me with this (explain it)

Which process is involved in growing crops? irrigation transportation recreation condensation

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?

Protein and polypeptide sequences can be determined by first partially hydrolyzing the protein or polypeptide followed by amino acid sequencing of the fragment pieces using the chemical degradation process known as edman degradation. determine the sequence of the initial (18-amino acid) polypeptide that produces the following five partial sequences after hydrolysis and edman degradation.