sage

list_plot ([1,2,3])
list_plot ([1,2,3], plotjoined = true)
list_plot (arange(0,1, .1), plotjoined = true)
list_plot (arange(0,1, .1) **2, plotjoined = true)

x= arange(0,10, .5)
y= x ** 2
list_plot(zip(x,y))