MATH
posted by Tiffany .
use these facts to find the equation for the circle
center (0,0), radius=6
a)x2y2=36
b)x2+y2=36
c)x2y2=6
d)x2+y2=6

The general form for a circle of radius r, at (a,b) is
(xa)^2 + (yb)^2 = r^2
Respond to this Question
Similar Questions

calc
standard equation of circle concentric with X^2+Y^22X8Y+1=0 and tangent to line 2XY=3 Complete the squares to find the center of the circle. X^2+Y^22X8Y+1=0 (x1)^2+(y4)^2  16 =0 The center is (1,4) and the radius for the given … 
math
Write an equation of a circle with the center (5,4) and radius 6. The general equation for a circle is (xa)^2 + (yb)^2 = r^2, where r is the radius of the circle and (a,b) are the (x,y) coordinates of the center. Make the appropriate … 
Math
The points (4, –5) and (– 4, 1) are endpoints of a diameter of a circle. (a) Find the center of the circle. (b) Find the length of the radius of the circle. (Note that this is a distance.) Give the exact answer. Show work. (c) … 
Math(Please check answers)
These questions that I have completed are on a test review for my exam and I would just like to know if they are correct. These are only a few of the questions, I have more that are just not complete yet. Thank You! 1) List the intercepts … 
Math
These questions that I have completed are on a test review for my exam and I would just like to know if they are correct. These are only a few of the questions, I have more that are just not complete yet. Thank You! 1) List the intercepts … 
NEED MAJOR HELP! *QUADRATIC EQUATIONS*
Write the equation for the circle with center at ( 8,  6) and radius of 10. (x+8)² + (y + 6)² = 10 (x+8)² + (y + 6)² = 100 (x8)² + (y  6)² = 100 Find the standard equation for the circle with center on the positive xaxis … 
college precalculus
4x^2+4y^216x24y+51=0 is the equation of a circle. where is the center of the circle and what is it's radius? 
math
4x^2+4y^216x24y+51=0 is the equation of a circle. where is the center of the circle and what is it's radius? 
math
4x^2+4y^216x24y+51=0 is the equation of a circle. where is the center of the circle and what is it's radius? 
Geometry
Write the General form equations for the following circles: 1. A circle with center (1, 6) and radius 4 2. A circle with center (6, 8) and radius 10 3. A circle with center (0, 3) and radius 2√3 4. A circle with center (0.5, 5.5 …