density
A line graph
The time and the temperature
The answer depends on whether it is a distance-time graph, speed-time graph or something else.
A line graph would be suitable for recording the temperature of hot water in a pan over time. This type of graph can effectively show how the temperature changes at different time intervals.
The time and the temperature
Usually a bar graph would be better in this situation. If the temperature is shown over time, a line graph would be better.
If velocity is constant, the slope of the graph on a position vs. time graph will be a straight line. The slope of this line will represent the constant velocity of the object.
the line graph is the temperature!
dependent variable
I can't display a graph, but typically a temperature-time graph for a day might show temperatures rising overnight, peaking in the afternoon, and then decreasing again in the evening. This pattern can vary based on location and weather conditions.
To make a graph for a lava lamp, you can display the temperature of the lamp's liquid contents over time. You could plot time on the x-axis and temperature on the y-axis. This graph could show the changing temperature patterns of the lava lamp as it warms up and cools down.