Question 1130164
rewrite as
3x-200p=-1800
3x+100p=1800
-3x-100p=-1800.  add the top and bottom
-300p=-3600
p=12
substitute into the first
3x-2400=-1800
x=200 units

write in slope-intercept form
3x=200p-1800; x=(200/3)p-600
3x=-100p+1800; x=(-100/3)p+600
{{{graph(300,300,-10,20,-200,700,(200x/3)-600,(-100x/3)+600))}}}