You can use a plot diagram to plot the points and if they all go straight through the origin then it is proportional
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Answer: ProportionalorDirectly Proportional
In general, that is pretty nearly impossible. It is possible if the shapes are made up of straight line segments. Then, if you join up each pair of corresponding points in the two objects and extend those lines, they must all meet in a single point. However, this method breaks down as soon as you have any curves in the objects since finding corresponding points becomes near impossible.
Any two non-zero quantities are always proportional. If the two quantities are X and Y, they are proportional to X/Y.
You need to show the equation. It makes a difference.
The answer is proportional.