Which ratios are all equivalent to 1: 5 2/9,2/10,6: 30,5 to 20, 3/20, 8 to 40

2:10 6:30 8:40 has a ratio of 1:5. How I did it was to divide the first number by the second number to get 1:5

step-by-step explanation:

once you graph it hit 2nd (the blue button) and graph

that takes you to a table of coordinates

on the left is x coordinates and on the right is y coordinates and an empty box

(you may have to scroll up/down in order to get ( x, 0)