Consider the following. Function f(x) 12 (x, y) = Line x+y=0 Find the slope of the given line. slope = Determine the slope of any line parallel to the given line. slope = Find f'(x). f'(x) = Find the point on f(x) where the tangent line is parallel to the given line. = ([ Find an equation of the line tangent to the graph of f(x) and parallel to the given line.