Posted by Melissa on Saturday, April 7, 2012 at 2:12pm.
Verify if correct.
Determine which line is parallel to the line with Cartesian equation 2x +3y + 5=0
a) r=(1,1) +s(2,3), seR
b) x=3t1, y=2t1, teR
c) x=2t1, 3t1, teR
d) none of the above.
I chose D, none of the above because none of them are multiples of the given equation 2x+3y+5=0.
Thank you!

Calculus  Reiny, Saturday, April 7, 2012 at 3:18pm
look at b) , and sub into the line equation
LS = 2x + 3y + 5
= 2(3t1) + 3(2t1) + 5
= 6t2 6t3 + 5
= 0
= RS
not only are they parallel, but they represent the same line