Which graph and equation shows a proportional relationship between x and y? CLEAR CHECK

Line graph with line extending from (0, 0). Next to graph is equation, y = 11.5 x.

Line graph with line not extending from (0, 0) but further down x axis. Next to graph is equation, y = 1.5 x minus 1.5.

Line graph where line does not start at (0, 0) but further up y axis. Equation next to graph, y = 11.5 x + 1.5.

Line graph where line does not start at (0, 0) but runs parallel to x axis, starting at a point on y axis. Equation next to graph is y = 1.5.