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17 November, 09:30

Write the equation of the line that it is perpendicular to 5x+8y=16 and passes through (-5,7)

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  1. 17 November, 09:50
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    5x + 8y=16 - > y = - 5 / 8 x + 16 / 8 (2) = - 5 / 8 x + 2 use the slope to find the y intercept. Line is parallel so use m = - 5 / 8 (-5, 7) - > 7 = (-5 / 8) (-5) + b 7 = 25 / 8 + b - > 8 (7 = 25 / 8 + b) 56 = 25 + 8b 56-25 = 8b b = 31 / 8 so, y = - 5 / 8 x + 31 / 8.
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