How do you graph the inequality y<-x^2+13x-36y<x2+13x36?

1 Answer
Jan 27, 2017

Interior of this parabola, having size a = 1/4, vertex V(13/2, 25/4) and axis x=13/2 darrx=132⏐ ⏐.. See graph.

Explanation:

The ( not included ) boundary uarr curve, for the map of the

solution {(x, y)}{(x,y)}, is the parabola

y=-x^2+13x-36=-(x-13/2)^2+169/4-25y=x2+13x36=(x132)2+169425,

giving the standard form

(x-13/2)^2=-(y-25/4)(x132)2=(y254)

graph{y+x^2-13x+36<0 [-20, 20, -10, 10]}