How do I figure out what equations look like in a graph

0, 45 x - 45, 2 5 -X+ 105, -X+, 7sxs10 lox -20 2 o, 0sxs2 2sxs6 6sxs10 0sxs2 2 s x s 10 70, -lox + 140, 60, f(x)= 20 ---X+70, 3 30, 7sxs8 8sxs10 6 s x S 10 15x, 30, IOX- 10, 40 460 3 20, 15 x - 10, 2 -25K + 250, osxs2 4sxs7 osxs4 8 s x s 10 16x, -80x + 480, f(x)= 5K, 30, 15K - 30, 15 -x + 105, 2 osxs5 5sxs6 OSX s 2 2sxs4 6sxs10