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Question

The equation of line that passes through (10,1) and is perpandicular to y=x42 is

A
4x+y=39
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B
2x+y=19
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C
x+y=9
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D
x+2y=8
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Solution

The correct option is C 4x+y=39
Required line is perpendicular to the line having slope =14
So, slope of required line =4

Line passing through (10,1)

=> Required line =y(1)=4(x10)

=> 4x+y=39

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