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lecture2 - Lecture 2 1 Section 1.4 THE SLOPE OF A LINE...

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Lecture 2 1 Section 1.4 THE SLOPE OF A LINE Given nonvertical line L containing ( x 1 , y 1 ) and ( x 2 , y 2 ): Def. If line L contains points P 1 ( x 1 , y 1 ) and P 2 ( x 2 , y 2 ), the slope of L is
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Lecture 2 2 Slope as a Rate of Change If Δ x = 1, In general ,
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Lecture 2 3 Slope and the Graph of a Line ex. Sketch the graph of the line through the point (0 , 0) with slope A. - 1 B. 3 2 NOTE: Given line L with slope m : 1) if m > 0, 2) if m < 0, 3) if m = 0,
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Lecture 2 4 EQUATIONS OF LINES ex. Consider a line L which is parallel to the y -axis and which crosses the x -axis at x = a . Find the equation of L . ex. Given line L with slope m containing the point ( x 1 , y 1 ). Write the equation of L . POINT - SLOPE FORMULA FOR THE EQUATION OF A LINE
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Lecture 2 5 INTERCEPTS OF A GRAPH Def. An x -intercept of a graph is a point ( x -value) at which the graph crosses the x -axis. To find, A y -intercept of a graph is a point( y -coordinate) at which the graph crosses the y -axis. To find,
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Lecture 2 6 ex. Find the equation of the line with slope m and y -intercept b .
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