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College Algebra

by: Alvena McDermott

College Algebra MATH 1310

Alvena McDermott
GPA 3.69


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Class Notes
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This 9 page Class Notes was uploaded by Alvena McDermott on Saturday September 19, 2015. The Class Notes belongs to MATH 1310 at University of Houston taught by Staff in Fall. Since its upload, it has received 23 views. For similar materials see /class/208413/math-1310-university-of-houston in Mathmatics at University of Houston.


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Date Created: 09/19/15
1310 7 Chapter l 11 Distance and Midpoint Distance Formula 7 know by heart forAX1y1andBX2y2 dAB VX2 X12 Y2 12 Midpoint formula for a segment with endpoints A and B 7 know by heart forAX1y1andBX2y2 mm 2 2 additional practice simplify l2 I625 simplify 2 Examples Given the following points nd the distance between them and the midpoint of the segment joining them Sketch a little graph of the segment being sure to use appropriate scaling A 1 2 and5 3 Distance Midpoint l l B 20 and 0 b1g h1nt 916 144 Distance Midpoint C 1 and Lg big hint 916 25 169 Distance Midpoint Additional Note There s a primer on fractions on my website wwwmathuhedudog 12 Lines Review Parts of a line Example A Ax By C 0 is the General Equation of a Line x intercept 7 where the line hits the x axis y 0 y intercept 7 where the line hits the y axis x 0 slope 7 a number that measures incline 8x 2y 100 The rst row shows the coordinates of the y intercept The second row shows the coordinates of the x intercept From this we can calculate the slope 372 371 X2X1 m Example B 6X 3y 18 0 The rst row shows the coordinates of the y intercept The second row shows the coordinates of the X intercept From this we can calculate the slope m yz yl X2X1 IfX 5 what is y Ify 23 what is X Let s calculate some slopes Given the following points nd The slope of the line joining them The distance between them The midpoint of the segment joining them 2 5 and 3 10 Example C 4X 8y 16 0 The rst row shows the coordinates of the y intercept The second row shows the coordinates of the X intercept From this we can calculate the slope m yz yl X2X1 IfX whatisy Ify whatis X Now for a bit of review Given the line 9X 3y 18 0 Find the following The slope of the line The coordinates of the intercepts The distance between the intercepts The midpoint of the segment joining the intercepts IfX 1 what is y Ify 23 what is X Remind me to sketch a graph of this as we go


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