<p>Amanda wants to calculate the amount of time it will take her to travel a certain distance. She makes the graph below to show the distance she travels (`y` miles) in a given time (`x` hours). </p><linegraph data-props='{"options":{"x_min":0,"y_min":0,"y_max":400,"x_max":8,"cell_size":35,"x_interval":1,"y_interval":50,"x_label":"Time (hours)","y_label":"Distance (miles)","title":"Amanda's Distance Traveled Over TIme","x_axis_name":"x","y_axis_name":"y"},"points":[{"id":0,"x":0,"y":0,"show_point":false,"highlight_point":false,"show_coordinates":false,"show_x_intercept":false,"show_y_intercept":false,"x_coordinate_highlight":true,"y_coordinate_highlight":true,"show_x_intercept_point":false,"show_y_intercept_point":false},{"id":1,"x":1,"y":50,"show_point":false,"highlight_point":false,"highlight_point_color":"#A3A3B3","show_coordinates":false,"x_coordinate_highlight":true,"y_coordinate_highlight":true,"show_x_intercept_point":false,"show_y_intercept_point":false,"show_x_intercept":false,"show_y_intercept":false},{"id":2,"x":8,"y":400,"show_point":false,"highlight_point":false,"highlight_point_color":"#A3A3B3","show_coordinates":false,"x_coordinate_highlight":true,"y_coordinate_highlight":true,"show_x_intercept_point":false,"show_y_intercept_point":false,"show_x_intercept":false,"show_y_intercept":false}],"line_segments":[{"first_point_id":0,"second_point_id":2,"show_start_arrow":false,"show_end_arrow":true,"highlight_line":"#A3A3B3"}]}'></linegraph><p>Write an equation that represents the proportional relationship in this graph, for `y` in terms of `x`.</p>