Question 536021
y=4x-2
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-x+4y=0
4y=x
y=(1/4)x

 compare the equations
the slopes are not the same so lines are not parallel
..
slope of first line = 4
slope of second line = 1/4

m1* m2 = 4*1/4 = 1

If the lines are perpendicular m1*m2 mustbe equal to -1.
So the lines are not perpendicular