50th term of 14,12,10,8

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

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.  

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x