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Unformatted text preview: (9, 5); 5x + 3y = 4 First, you must put the equation into y = mx + b form. 5x + 3y = 45x 5x 3y = 5x + 4 Now you must divide each term by 3. 3 3 3 Y = 53x + 43 The slope of the given line is  53. In order to find an equation that will be perpendicular, you must use the negative reciprocal of this slope. This would be – ( ⅗) or +⅗. We will use that for our slope now with the given point, (9, 5), in the following formula to find the equation of the perpendicular line: y – y1 = m(x –x1) y – (5) = ⅗(x – 9) y + 5 = ⅗x  2755 5 We must change 5 here to a fraction with a common denominator before subtracting. This would be 255. Y = ⅗x  275  255 Y = ⅗x  525 This is the equation of the line perpendicular to 5x + 3y = 4....
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 Spring '09
 UniversityofPhoenix
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