I am using 'gnuplot' to plot a line graph with point:

set style data linespoints
set xlabel "number"

set ylabel "Dollars"
set yrange [0:250]

how can I increase the width of my graph, so that as I have more 'x', i want my graph to more of a rectangle instead of a square?

And how can I increase the interval of my 'y-axis'? now, it just draw a mark for every 50 in my y axis?

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