Asked by fay.... pls help

'Write down the equation of the line passing through 2,1 and perpendicular to 2x-4y-1=0 I tried figuring out what to do but I don't know how to.
Answered by Steve
the slope of 2x-4y-1=0 is 1/2
So, the slope if its perpendicular is -2

Now use the point-slope form to write the line through (2,1) with slope -2:

y-1 = -2(x-2)
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