# Load the built-in dataset
data(mtcars)

# Create scatter plot
plot(mtcars$hp, mtcars$mpg,
     xlab = "Horsepower (hp)",
     ylab = "Miles Per Gallon (mpg)",
     main = "Relationship Between Horsepower and Fuel Efficiency",
     pch = 19, # Solid circles
     col = "blue")

Interpretation

There is a slight negative relationship between mpg and hp