The equation is f(x)=72-12x

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.