Find equations of all lines having slope -3 that are tangent to the curve y = 3 x+9 Select the correct choice below and fill in the answer box(es) within your choice. OA. There is only one line tangent to the curve with a slope of -3 and its equation is (Type an equation.) OB. There are two lines tangent to the curve with a slope of -3. The equation of the line with the larger y-intercept is (Type equations.)