Answer :
[tex]\begin{gathered} y=2x+b \\ 4=2(-3)+b \\ 4=-6+b \\ 4+6=-6+b+6 \\ b=10 \end{gathered}[/tex]
then the equation in standard form:
[tex]\begin{gathered} y=mx+b \\ y=2x+10 \end{gathered}[/tex]