Question

Write the equation in standard form for the circle with center (-5,8) and radius 4

Answer 1

(x + 5)² + (y - 8)² = 16

Explanation:

the equation of a circle in standard form is

(x - h )² + (y - k )² = r²

where (h, k ) are the coordinates of the centre and r is the radius

here (h, k ) = (- 5, 8 ) and r = 4 , then

(x - (- 5) )² + (y - 8)² = 4² , that is

(x + 5)² + (y - 8)² = 16

Answer 2

(x+5)^2+(y-8)^2=4^2

Explanation:

I used a website called desmos.