18. If the data is presented using double line graph, what information will be shown in the vertical axis
a. Days of a week
b. Range of values from 0 to 30
c. Range of values from 0 to 50
d. All of the above
19. If the data is presented using double line graph, what information will be shown in the horizontal
axis?
a. Days of a week
b. Range of values from 0 to 30
c. Range of values from 0 to 50
d. All of the above
20. . If the data is presented using double line graph, how many times will the line meet?
a. once
b. twice
c. thrice
d. None of the above​