If you mean: 4x-2y = -3 then the slope of the line parallel to it will also have a slope of 2 but with a different y intercept
if you mean 3x + 4y = 8 the slope is -3/4 and any parallel line will have the same slope.
If you mean y = -3x -6 then the slope of the line is -3
If you mean points of (-4, 3) and (3, 1) then the slope is -2/7
If you mean: y = 2x-3 then the slope is 2 and the y intercept is -3
If you mean: y = -3x then the slope of the line is -3
if the slope of a line is 2/3, then the slope of a parallel line would be 2/3.
If you mean: 4x-2y = -3 then the slope of the line parallel to it will also have a slope of 2 but with a different y intercept
If you mean points of (3, 9) and (1, 3) then the slope is 3
If you mean y = -3x -6 then the slope of the line is -3
If you mean points of (-4, 3) and (3, 1) then the slope is -2/7
If you mean a slope of 3 and a point of (3, 9) then the equation is y = 3x-3
If you mean points of (3, 9) and (-4, 2) then the slope of the line is 1
If you mean (-2, 2) and (3, 4) then the slope of the line is 2/5
If you mean points of (1, 5) and (-1, -1) then the slope works out as 3
If you mean: y = -4x+3 then the perpendicular slope is 1/4
The slope of two lines are perpendicular only if their slopes multiplied together equal -1 (m1*m2 = -1). So if a line has a slope of -3 then a line perpendicular to this one has a slope of -1/-3 or 1/3.