Question

Describe the regions defined by the inequalities and pairs of inequali ties in Exercises 61-68.61. x ^ 2 + y ^ 2 > 7

Answer 1

The equation x^2 + y^2 = r^2 is a general equation of a circle whose center is (0,0) and radius is r unit.

So, The inequality defines the region outside a circle whose center is (0,0) and radius is sqrt(7).