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

asked Mar 5, 2023 6.0k views

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

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

Gene answered Mar 11, 2023

by Gene

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