 |
Shopping Cart 
Checkout
|
 |
 |
|
|
 |
 |
 |
 |
 |
 |
|
|||
|
|
|
|||||||||||||||||||||||||||||||||||||||||||||
Key Formulas
Distance in the Coordinate Plane
Distance = 
, if you’re measuring
the distance between the points (x1,y1)
and (x2,y2).
, if you’re measuring
the distance between the points (x1,y1)
and (x2,y2).Midpoint Between Two Points
Midpoint = (
, 
), where the endpoints of a line
segment are (x1, y1)
and (x2, y2).
, ), where the endpoints of a line
segment are (x1, y1)
and (x2, y2).Point-Slope Form of the Equation of a Line
y – y1 = m(x – x1)�,
where m is the slope of the line and (x1,y1)
is a point on the line.
Slope-Intercept Form of the Equation of a Line
y = mx + b, where m is
the slope of the line, and b is the y-intercept
of the line. Both m and b are
constants.
Slope of a Line
Slope = 
, where two points
on the line are (x1, y1)
and (x2, y2).
, where two points
on the line are (x1, y1)
and (x2, y2).Standard Form of the Equation of a Circle
(x – h)2 +
(y – k)2 = r2,
where (h, k) is the center of
the circle and r is the radius. When centered at
the origin, the equation simplifies to x2 + y2 = r2.
Standard Form of the Equation of an Ellipse
= 1, where the
ellipse is centered at (h, k)
and has a horizontal axis of length 2a and a vertical axis of length
2b.Standard Form of the Equation of a Parabola
y = a(x – h)2 + k,
where a, h, and k are
constants.
Standard Form of the Equation of a Hyperbola
– 
= 1, where a, b, h,
and k are constants. When centered at the origin,
the equation simplifies to 
– 
= 1. |
||||||||
Message Boards
|
||||||||
Test Prep Centers
|
||||||||
SparkCollege
|
 |
||
Your Account
|
||
|
|
||||||||||||||||
|
||||||||||||||||
 |
SAT II is a registered trademark of the College Entrance Examination Board
which was not involved in the production of, and does not endorse, this product.
which was not involved in the production of, and does not endorse, this product.
©2006 SparkNotes LLC, All Rights Reserved.