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HELP!!!!!! What is the equation of the line that is perpendicular to y = one-fifth x + 4 and that passes through (5,–4)?
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HELP!!!!!! What is the equation of the line that is perpendicular to y = one-fifth x + 4 and that passes through (5,–4)?

User Oscarkuo
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1 Answer

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y = mx + b \\ \\ m = ( - 1)/(a) = ( - 1)/( (1)/(5) ) = - 5 \\ y = - 5x + b \\ passes \: through \: (5 \: , - 4)


- 4 = - 5(5) + b \\ b = - 4 + 25 = 21 \\ \\ y = - 5x + 21

User Gene
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