Appendix

 

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Enhance Your Understanding

 

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Glossary

Unit 7: Equations and Graphs of Linear Relations

General Form The equation of a line written as Ax + By + C = 0, where A and B are not both zero. By convention, A, B, and C are whole numbers, and A is positive.

Linear Equation A linear equation contains terms of degree 0 and/or 1. Linear equations are often used to represent linear relations.

Parallel Lines Lines that are parallel maintain a constant separation. Parallel lines do not intersect.

Perpendicular Lines Lines that are perpendicular meet at right angles

Slope-Intercept Form A linear equation the form y = mx + b, where m represents the slope and b represents the y-intercept of the graph of the corresponding linear relation.

Slope-Point Form A linear equation of the form «math style=¨font-family:`Times New Roman`¨ xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»m«/mi»«mo»(«/mo»«mi»x«/mi»«mo»-«/mo»«msub»«mi»x«/mi»«mn»1«/mn»«/msub»«mo»)«/mo»«mo»=«/mo»«mi»y«/mi»«mo»-«/mo»«msub»«mi»y«/mi»«mn»1«/mn»«/msub»«/math», where m represents the slope of the graph of the relation and where «math style=¨font-family:`Times New Roman`¨ xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»(«/mo»«msub»«mi»x«/mi»«mn»1«/mn»«/msub»«mo»,«/mo»«mo»§#160;«/mo»«msub»«mi»y«/mi»«mn»1«/mn»«/msub»«mo»)«/mo»«/math» is a specific point on the graph of the linear relation.

x -intercept The point at which the graph of a relation crosses the x-axis

y -intercept The point at which the graph of a relation crosses the y-axis

 

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Calculator Guide

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