I really need your help
the lines px + 4y - 2 = 0 and 2x - y + p = 0 are perpendicular. Find the value of p.
The lines x+2y+12=0, x-2y+3=0, 2y+x-8=0 and x-2y-2=0 form a quadrilateral. What is the best description for this quadrilateral?
I really feel stupid :-|
thank you so muchhh!!!