2.8_bzca5e

# 2.8_bzca5e - Section 2.8 Distance and Midpoint Formulas...

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Unformatted text preview: Section 2.8 Distance and Midpoint Formulas; Circles The Distance Formula ( 29 ( 29 ( 29 ( 29 2 2 2 1 2 1 2 2 Find the Distance between (-4,2) and (3,-7) x 3 4 7 2 49 81 130 11.4 x y y- +-- - + - - + =-5-4-3-2-1 1 2 3 4 5-8-7-6-5-4-3-2-1 1 2 3 4 5 Example Find the distance between (4,-5) and (9,-2). The Midpoint Formula Find the midpoint of the segment whose endpoint are (-1,5) and (6,8). 1 6 5 8 , 2 2 5 13 , 2 2- + + ÷ ÷ -1 1 2 3 4 5 6 7-2-1 1 2 3 4 5 6 7 8 9 y (-1,5) (6,8) Example Find the midpoint of the segment whose endpoints are (-1,7) and (-5,9). Circles 2 2 2 2 2 To Graph a Circle; First Solve the equation for y: x 4 y 4-x y = 4 Graph as t y x + = = ±- 2 2 1 2 wo separate equations y = 4 y = 4 So that the circle doesn't look flattened, press ZOOM, #5 for ZSquare. Now press GRAPH. x x--- Graphing Calculator Write the standard form of the equation of the circle with center (-4,1) and radius of 3....
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## This document was uploaded on 10/26/2011 for the course FKP bmfp at UTEM Chile.

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2.8_bzca5e - Section 2.8 Distance and Midpoint Formulas...

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