Consider this line graph that represents speed in meters/second. the x-axis is labelled in seconds; the y-axis is labelled in meters. imagine that the moving object stops after 2.5 seconds and stays stopped for 0.5 seconds. what would the line for that time interval look like on this graph? a) curve downward to y equals 3 b) straight, diagonal, negative slope to {14, 3} c) straight, diagonal, positive slope to {3, 15} d) straight and horizontal at y equals 14, to {3, 14}