(x-2)^2+y^2=64
y^2=-x^2+4x+60
y^2=-x^2-8x+6
Y2=-x2+4x+60 apex
y2=-x2-8x+6
(x-2)^2+y^2=64
y2=x3+3x2
y2 = 169 Square root both sides: y = 13
y=±√15
y2=-x2-8x+6
(x-2)^2+y^2=64
4
9 (APEX)
The equation of a circle centered at the origin is x2 + y2 = r2; in this case, x2 + y2 = 64.The equation of a circle centered at the origin is x2 + y2 = r2; in this case, x2 + y2 = 64.The equation of a circle centered at the origin is x2 + y2 = r2; in this case, x2 + y2 = 64.The equation of a circle centered at the origin is x2 + y2 = r2; in this case, x2 + y2 = 64.
1
11 = sqrt of 121. it is a circle centred on the origin think what would happen on the line x=0 (The y axis) the equation simplifies to y2 = 121 or y =11 you can also think of eqn of a circle as x2+y2=r2
5. A circle with centre (0,0) has equation: x2 + y2 = radius2 With: x2 + y2 = 25 = 52 The radius is 5.
t
x2 + y2 =x2 + y2 = 5x2 + y2 = 10x2 + y2 = 25
Equation of a circle centre the origin is: x2 + y2 = radius2 ⇒ radius = √9 = 3.
x2 + y2 = 2r2