2 Find the gradient of a line which is
perpendicular to each of the following lines:
a y=-3x+11 b -+2y=0
4
c y=-3
d y =
2(x-1)
3
6 A straight connecting street segment is
built perpendicular to an existing street
2
with equation y=x+3. Determine the
equation of the line of the new street
segment, which passes through point
B(-1,-0.2).
7 A fish farm builds a breeding basin in the
form of a quadrilateral ABCD, with
A(-3,-1), B(2.0), C(5,3) and D(0,2).
Show that the quadrilateral ABCD is a
parallelogram.