If the line `x-3y+5+ k(x+y-3)=0`, is perpendicular to the line `x+y=1`, and `k`.

Is the line x - 3y = 4 perpendicular to the line 3x - y = 7 ?

Find the value of k if the straight line 2x+3y+4+k(6x-y+12)=0 is perpendicular to the line 7x+5y-4=0.

Is the line 3x + 4y + 7 = 0 perpendicular to the line 28x - 21y + 50 = 0 ?

Find the equation of a line passing through the point of intersection of lines x-y-1=0 and 2x-3y+1=0 and perpendicular to the line x-2y+5=0 .

Find the equation of a line passing through the point of intersection of the lines 3x+5y=-2 and 5x-2y=7 and perpendicular to the line 4x-5y+1=0 .

Find the equation of the line passing through the point of intersection of the lines x+5y+7=0 and 3x+2y-5=0 (b) perpendicular to the line 7x + 2y - 5 = 0

Find the equation of the line through the intersection of 5x-3y=1 and 2x-3y -23= 0 and perpendicular to the line 5x - 3y -1 =0 .

Find the equation of the normal to the parabola y^(2)=4x , which is (a) parallel to the line y = 2x - 5 (b) perpendicular to the line x + 3y + 1 = 0.

Find the equation of the line that has y-intercept -3 and is perpendicular to the line 3x+5y=4 .

Find the slope of a line perpendicular to the line 3x+5y=8 .