Practice Write the equation of the line that passes through the given point and is perpendicular to the given line. Write the answer in slope-intercept form.
P(-3, 3), http://www.webassign.net/images/cleardot.gif y + 9x = -15
i did the whole y-y1=mx(x-x1)
and i came up with y-3=-1/9x[x-(-3)]
What am I doing wrong? PLEASE HELP