Westonci.ca is the ultimate Q&A platform, offering detailed and reliable answers from a knowledgeable community. Get immediate and reliable answers to your questions from a community of experienced professionals on our platform. Our platform provides a seamless experience for finding reliable answers from a network of experienced professionals.

If lines −2
1
=
−4
4
=
−6
7
and +1
3
=
+3
5
=
+5

are coplanar, the
find the value of r.