1310-Notes-Sec-12

# 1310-Notes-Sec-12 - Math 1310 Section 1.2 Lines Topics in...

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Math 1310 Class Notes – Section 1.2, Page 1 of 11 Math 1310 Section 1.2 Lines Topics in this section include finding the slope of a line, writing an equation of the line, graphing a line in the coordinate plane, finding x and y intercepts, and writing an equation of a line that is parallel or perpendicular to a given line through a stated point. Slope The slope of a line represents the rate of change of the line. A steep line that rises from left to right will have a large positive slope, while a line that falls gradually from left to right will have a small negative slope. Example 1: Determine whether each of these lines has a positive slope, negative slope, slope 0 or undefined slope.

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Math 1310 Class Notes – Section 1.2, Page 2 of 11 You can find the slope of a line that contains two given points ( 29 2 2 1 1 , and ) , ( y x y x by using the slope formula : 1 2 1 2 x x y y m - - = . Example 2: Find the slope of the line containing the points (4, -3) and (-2, 1). Example 3: Find the slope of the line containing the points (-7, 4) and (3, 4).
Example 4: Find the slope of the line containing the points (2, -5) and (2, 7). You can also find the slope of a line from its graph.

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## This note was uploaded on 02/22/2012 for the course MATH 1310 taught by Professor Marks during the Summer '08 term at University of Houston.

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1310-Notes-Sec-12 - Math 1310 Section 1.2 Lines Topics in...

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