Module # 9 assignment

 For this visualization I used the mtcars dataset in R because it has multiple variables about different cars that make it good for a multivariate plot. In my graph I compared vehicle weight and miles per gallon to see how fuel efficiency changes, while also using color to show the number of cylinders, point size to represent horsepower, and faceting to separate cars by the number of gears. The plot shows that heavier cars generally have lower MPG, while lighter cars tend to be more fuel efficient, and cars with more cylinders and higher horsepower usually have worse fuel economy. Using a multivariate visualization was helpful because it lets you see several relationships in the data at the same time instead of looking at multiple separate charts. I also tried to apply some of the design principles from the module like contrast with different colors for cylinders, alignment with clearly labeled axes, and balance by keeping the layout simple so the relationships in the data are easy to see.