Graphing and Writing Linear Equations (Grade 8) By: Catherine ...
Graphing and Writing Linear Equations (Grade 8) By: Catherine ...
Graphing and Writing Linear Equations (Grade 8) By: Catherine ...
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Lesson 1 - Overhead 1<br />
5.1 Slope<br />
~ The mathematical term to describe steepness is slope.<br />
~ Counting units to find slope:<br />
Slope = vertical change (rise)<br />
horizontal change (run)<br />
~ Draw examples of slope -<br />
A line with a positive slope<br />
goes upward <strong>and</strong> to the right.<br />
A line with a negative slope<br />
goes downward from left to right.<br />
The slope of a horizontal line is 0.<br />
The slope of a vertical line is undefined.<br />
~ You can use any two coordinates of a line to find the slope of the line.<br />
vertical change Y2 - Y1<br />
Slope = horizontal change X2 - X1 where x does not = 0<br />
~ Example : (X2,Y2) = (4,3)<br />
(X1,Y1) = (-1,1)<br />
.<br />
Slope = 3 - 1 = 2<br />
4-(-1) 5<br />
6
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