Verified Answer :

\(y-y_1=m(x-x_1)\\ y-9=6(x-1)\\ y=6x-6+9\\ y=6x+3\)

\(y= mx+b\)

\(y=6x+b\)

\((9)=6(1)+b\)

\(9=6+b\)

\(3 = b\)

\(y=6x+3\)