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(x1 , y1 )
d y2 − y1 
x
(x2 , y2 ) Example
1 Find the distance between (−1, 3) and (5, 0). 2 Determine if the points P (−2, −1), Q (8, 2), and R (1, −11)
are vertices of a right triangle. Outline Relations Graphing Relations Circles Circles Deﬁnition
y
The set of points (x , y ) that lie a
ﬁxed distance r > 0 from a ﬁxed
point C (h, k ) is called a circle. r
is called the radius and C is
called the center of the circle. Example
Draw the circle with radius 5 and center C (1, −2). r
C (x , y )
x Outline Relations Graphing Relations The Standard Form of the Equation of a Circle
If the distance from C (h, k ) to (x , y ) is r , then
r= (x − h)2 + (y −...
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This note was uploaded on 02/10/2014 for the course MATH 1050 taught by Professor K.jplatt during the Spring '14 term at Snow College.
 Spring '14
 K.JPlatt
 Math, Algebra, Cartesian Coordinate System

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