Analysis and Approaches for IBDP Maths Ebook 1 | Page 91

Front Page
3. The equation of a straight line L
1
is given as 3x� y� 21 � 0 .
(a) Write down the gradient and the x -intercept of L
1
.
(b) Find the equation of another straight line L
2
such that L
2
is perpendicular to
1
and they intersect at the x -axis, giving the answer in general form.
4. The equation of a straight line L
1
is given as 2x� 4y�17 � 0 .
(a) Write down the gradient and the y -intercept of L
1
.
(b) Find the equation of another straight line L
2
such that L
2
is perpendicular to
1
and they intersect at the y -axis, giving the answer in general form.
[2]
L
[3]
[2]
L
[3]
9
www.seprodstore.com
83