lines in R3 help asap please

[Summer5526]

I've been stuck on these questions for so long they're pretty hard

the question:
find a vector parametric equation for the following:

1) a line that has an x-intercept of -7 and a z-intercept of 4

2) a line parallel to. x= -1 -3t y=-2-2t z= -3+t and passes through the origin

 

[Steven G]

With all the time you spent on the problem you must have some work to show.
This site is like a game. You show us some of your work and then we show you some of our work and in the end you have your answer.

For the record, the reason no one has responded yet is that you did not follow the posting guidelines by showing us your work.

 

[Dr.Peterson]

I've been stuck on these questions for so long they're pretty hard

the question:
find a vector parametric equation for the following:

1) a line that has an x-intercept of -7 and a z-intercept of 4

2) a line parallel to. x= -1 -3t y=-2-2t z= -3+t and passes through the origin

Are you sure you copied problem (1) correctly? A line in R3 doesn't have x- and z-intercepts, unless it's in the xz-plane, so you don't normally hear those terms at all. But if that's true, then you have two points on the line, (-7,0,0) and (0,0,4). Use the direction vector and one of the points.

For the second, find the direction vector of the given line, and use (0,0,0) as your point.

Where are these hard? We can't tell what help you need without seeing your work.