it is given that gracias travels 30 miles with speed of 30 miles per hour in a hour,
so (1 , 30)
the x cordinate is representing the time and y cordinate is representing the distance
so all the coordinates will be
(2, 60) & (3, 90) & (4, 120) & (5, 150)
mark these point on the graph
then draw the line that will meet these point.