Question

How would you find the line of intersection (in cartesian form) of the following planes please?

3i + j - 4k = 4
and
-i + j - 2k = 2
Thank you!

Answer 1

hmm

Answer 2

i guess u cud mutliply the bottom eqn by 2 and add them together

Answer 3

and u shud get the eqn of a line in i and j

Answer 4

3i + j - 4k = 4 and
-2i + 2j - 42k = 4
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5i-j=0
j=5i