How to graph 6,0 and 0,4

Yesterday i ran 5 miles. today, i ran 3.7 miles. did my percent increase, decrease or is it a percent error? plz i need

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.

If on=8x-8,lm=7x+4,nm=x-5,and ol=3y-6