The coordinates of the vertices of / are q(3, 0), p(5, 6), and r(7, 0). if / is reflected across the x-axis to create /, find the coordinates of r'.

What term makes it inconsistent y=2x - 4

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.  

Can someone explain to me how to do