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12-04-2018
Mathematics

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If a line perpendicular to 2y=x+5 that passes through (2,1) using the slope- intercept form

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12-04-2018

Slope of 2y = x + 5:-
This is y = 0.5 x + 2.5 in slope intercept form so its slope = 0.5

Slope of the line perpendicular to it = -1 / 0.5 = -2

it passes through (2 , 1) so we have

y- 1 = -2(x - 2)
y = -2x + 4 + 1

The answer is y = -2x + 5

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