If y varies directly as x, find y: {(8, -12). (20, y)}

CRey asked Oct 2, 2022

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If y varies directly as x, find y:
{(8, -12). (20, y)}

CRey asked Oct 2, 2022

by CRey

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21 votes

$\\ \sf\longmapsto x_1y_2=x_2y_1$

$\\ \sf\longmapsto 8y=-12(20)$

$\\ \sf\longmapsto 8y=-240$

$\\ \sf\longmapsto y=-240/8$

$\\ \sf\longmapsto y=-60$

Los Frijoles answered Oct 8, 2022

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