Question

How to find directions ratios of the line `(x-1)/2=(y+3)/1, z=2`?

Answer 1

When given equations of a line of the form:

`(x-x_0)/a=(y-y_0)/b=(z-z_0)/c`

The directions ratios are `a:b:c`
`z = 2` is a special case where `c = 0`
Answer: `(2:1:0)`