Julia graphics fonts very small in Jupyter notebook

Question

When I create a graph in an iJulia notebook, the font in the axis labels and legend is extremely small and I can't seem to make it bigger. I am running Julia 1.0.0 in a Jupyter notebook (jupyter: 1.0.0-py36_7) on Linux (Ubuntu). For example, the following code:

using Plots
x = 1:10; y = rand(10); 
plot(x,y, size=[500,300])

Results in this image:

graph with very small font

I even tried uninstalling and reinstalling Jupyter. Any help would be greatly appreciated.

[Edited] In response to Bill's suggestion, I added: Plots.scalefontsizes(2.5)

This resulted in more space for the characters, but not larger characters. The result is here:

Plot with scalefontsizes(2.5)

Answer 1

Try:

Plots.scalefontsizes(2.5)  # 2.5X

and adjust as needed.