x2 + y2 = r2 describes a circle, radius r, centred on the origin. r is thus sqrt(25 + 144) ie 13 units.
15 APEX =)
Lots of points don't lie on the circle. In fact, there are (in a way) more points NOT on the circle, than points on the circle.
9
x2 + y2 = 49
It's called a centered trochoid.
17
15 APEX =)
13 good luck
The radius of the circle decreases when you make the circle smaller.
You should increase the radius in the standard equation of a circle centered at the origin. The general form is ( x^2 + y^2 = r^2 ), where ( r ) is the radius. By increasing ( r ), you extend the distance from the center to any point on the circle, making it larger.
Lots of points don't lie on the circle. In fact, there are (in a way) more points NOT on the circle, than points on the circle.
radius
radius
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.
x2 + y2 = 25
x2 + y2= 16
x2 + y2 = 25