Question

Write the standard form of the equation of the circle with its center at (-9,0)​, and a radius of 5.

Answer 1

`y^2+(x+9)^2=25`

Explanation:

The form for a standard circle equation is
`(y-k)^2+(x-h)^2=r^2`, where k is the x position of the center of the circle, h is the y position of the center of the circle, and r is the radius of the circle. Therefore, for this circle, the equation would be
`y^2+(x+9)^2=25`. Hope this helps!