Get the slope of the given line, by putting it into slope-intercept form. Then you can divide minus one by this slope, to get the slope of any perpendicular line.
x - 4y = 3 is the slope of a line perpendicular to line whose equation is y -5 3x plus 8 3.
If you mean y = 2x+5 then the perpendicular slope is -1/2
Slope of a line = m slope of perpendicular line = -1/m
It is: -1/2
the slope will be positive 1.5x the whole equation is y=4.5+1.5x
It is -1/2
For the line 2x + y = 8 , the slope equals ( -2 ) so the required slope of the line which is perpendicular to it is equal to (+1/2 )
3x+y = 4 y = -3x+4 Perpendicular slope: 1/3