step-by-step explanation:
since it tells you the equation 'y = 20x' and y is the number of gallons where as x is minutes
the independent variable = number of gallons
the dependent variable = minutes
and the number(s) to fill in the table
x , y
( 0, 0 )
( 1, 20 )
( 2, 40 )
( 3, 60 )
( 4, 80 )
and the relationship between x and y is linear because you can clearly see the graph having especially a straight line that is not interfering with itself
hope this helps you! :)
