Which equation represents a circle with a center at (2, –8) and a radius of 11?

a.(x – 8)2 + (y + 2)2 = 11
b.(x – 2)² + (y + 8)² = 121
c.(x + 2)² + (y – 8)² = 11
d.(x + 8)² + (y – 2)² = 121

The equation represents a circle with a center at (2, –8) and a radius of 11 is (x - 2)² + (y +8)² = 121

The standard equation of a circle is expressed as;

(x - a)² + (y – b)² = r²

where:

(a, b) is the centre of the circle

r is the radius of the circle'

Given the following

Substitute into the formula to have:

(x - 2)² + (y – (-8))² = 11²

(x - 2)² + (y +8)² = 121

Hence the equation represents a circle with a center at (2, –8) and a radius of 11 is (x - 2)² + (y +8)² = 121

Learn more on equation of a circle here: link

(a) the volume of the cone is 20/3 in3

hence, option a is correct.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value