(x - h)² + (y - k)² = r² what does it represent ?

Equation of a circle

Step-by-step explanation:

In the two-dimensional Cartesian Plane, we can write an equation representing a circle. This equation is the combination of all points on the circle, which happen to connect. The equation is

(x - h)² + (y - k)² = r²

( h , k) is the center of the circle, and r  is the radius of the circle.

if  h and  k  equal  0 , we get

This is the equation for a circle of radius  r centered at the origin.

b

step-by-step explanation:

2(2x + 3) = -4 + 2(2x + 5)

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 6

4x - 6 + 6 = 4x - 6 + 6

4x = 4x

x = x

unlimited solutions.