EQUATION
The r means in the standard form equation of a circle?
what is radius
In the equation (x-3)2+(y-2)2=16, the center of the circle is...
(3, 2)
What's the RADIUS: (x+7)2+(y-9)2=25
5
Write the equation of a circle with radius 1 and center (-9,-5).
(x+9)2+(y+5)2=1
The "h and k" portrays this part of a circle
what is center
the equation of a circle (x-2)2+(y+3)2=49, what are the coordinates of its center
(2, -3)
The diameter of a circle has length 12. The center is at (-5, 2). What's the radius?
6
Write an Equation of a circle with radius zero.
What is impossible?- Any answer with radius of a 0 is possible!
The "x" and "y" portray this part of the circle.
a point on the circle
What's the CENTER:
x2+(y+7)2=49
(0, -7)
What's the RADIUS:
(x+4)2+(y-6)2=64
8
Determine if this point (3,-2) is on the circle represented by (x-4)2+ (y-1)2=25. Yes or no?
No. Plug the point into the equation, it does not equal to 25.
What is the name/format of this expression: (x+2)2=x2+4x+4
Perfect square
What's the CENTER:
x2+ y2- 6x + 4y + 9+ 4 = 0
(3, -2)
What's the Radius:
x2 + y2- 6x + 4y + 9 + 4= 16
write the equation of a circle:
Center (2,4) Radius 11
(x -2)2+(y-4)2=121
Rewrite this expression: (x-3)²
x2-6x+9
What's the CENTER:
x2 + y2 +20x -2y + 100+1 = 8
(-10, 1)
What's the RADIUS:
x2-20x+y2+14y+149=0
radius is 0
Rewrite this equation so you can find the center and the radius of the circle:
x2+6x+y2-12y+20=0
(x+3)2+(y-6)2=25