The equation of a line in point slope form is:
[tex]y-y_1=m(x-x_1)[/tex]Where m is the slope and (x1,y1) is a point on the line.
In this case we have m=5 and point (1,9), then the equation is:
[tex]y-9=5(x-1)[/tex]Therefore the answer is the third option.