1) The independent variable is the x axis, which represents the time that has passed since the flowers began to be observed.
2) The range of the dependent variable height, the y axis, is 5mm to 30mm in this function. The lines are connected, so the relationship contains all variables in this range.
3) The independents variable is increasing with the dependent variable, so the graph shows a direct relationship where the marigold grows as time passes.
