- #1
paperdoll
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Homework Statement
I have three questions regarding vectors in parametric/circle form. I understand that there is a starting point and a direction vector, but I just can't seem to get my head around this
Homework Equations
1. Rewrite y=3x-1 in vector form.
2. Rewrite r=ti+(2t-1)j in parametric form
3. Where does the circle |r-(i+2j)|=root 5 cut the coordinate axes?
The Attempt at a Solution
For 1. I got -j+t(2i+5j) but I'm dubious my answer since I tried it after watching a bunch of youtube videos regarding such questions.
For no. 2, I am really lost where to even start :S
For question 3, I know the radius is root 5, and the centre point is i+2j but not sure where to go from here...thanks if you can help ^^ I'm new here