Jump to a New ChapterIntroduction to the SAT IIIntroduction to SAT II Math ICStrategies for SAT II Math ICMath IC FundamentalsAlgebraPlane GeometrySolid GeometryCoordinate GeometryTrigonometryFunctionsStatisticsMiscellaneous MathPractice Tests Are Your Best Friends
 8.1 The Coordinate Plane 8.2 Lines and Distance 8.3 Lines 8.4 Graphing Linear Inequalities 8.5 Other Important Graphs and Equations

 8.6 Coordinate Space 8.7 Key Formulas 8.8 Review Questions 8.9 Explanations
Key Formulas
Distance in the Coordinate Plane
Distance = if you’re measuring the distance between the points (x1, y1) and (x2, y2).
Distance in the Coordinate Space Distance
Distance = if you’re measuring the distance between the points (x1, y1, z1) and (x2, y2, z2).
Midpoint between Two Points
Midpoint = (, ), where the endpoints of a line segment are (x1, y1) and (x2, y2).
Point-Slope Form of the Equation of a Line
yy1 = m(xx1), 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).
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 a Parabola
y = a(x – h)2 + k, where a, h, and k are constants.
 Jump to a New ChapterIntroduction to the SAT IIIntroduction to SAT II Math ICStrategies for SAT II Math ICMath IC FundamentalsAlgebraPlane GeometrySolid GeometryCoordinate GeometryTrigonometryFunctionsStatisticsMiscellaneous MathPractice Tests Are Your Best Friends
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