# scatter plot
x=c(16,22,28,24,29,25,16,23,24)
y=c(36,42,57,40,54,51,34,37,45)
plot(x,y,main="scatter plot",xlab="test scores",ylab="sales",
    xlim=c(15,35),ylim=c(30,60))
plot(x,y, main,xlab,ylab,xlim,ylim,axes)