2 DIN 「E GEOMETRY (Chapter 6⑥)
5 A(②2」, 編)、B(z, yp)。and C(zs, ) are three points
such that the gradient of [AB] js 7, the gradient of [BC]
is 1.and AB = BC.
き Use the gradient formula to show that
(ゅーー)2 =49(zs 一1)2 and Bo
(9⑳。 一)^ = (za 一zo)*.
5 Use aand the distance formula to show that
za一> 王5(Z。 一み]).
< Hence, find the gradient of [AC].
C(Zs,)
ん(Z1。 が)
PARALLEL AND PERPENDICULAR
PARALLEL LINES
The given lines are parallel, and both of them have al
of 3.
* Iftwo lines are parallel then they
* Iftwolines have equal
