A parallelegram PRQS has P(-1,3), S(4,2), Q(5,-1). Find R

Find the distance from the point (-7,-8,5) to the line ä(t) =(2, 5, 3)t + (-1, 3, 4).

v1 =[ 2 5 1 ] , v2 =[ − 3 1 − 1 ] , b =[ 11 19 5 ] Show that b is in Span{v1,v2}. Express b as a linear combination of v1 and v2.

Show whether or not the diagonals of parallelogram ABCD bisect each other given A(-2,2), B(1,4), C(2,8) and D(-1,6).