Vectors if a= (-8 , 2) b=(0 , -12) c=( 1 ,-3)
find
a.) a – b + c
b.) a + b + c + d
c.) b – d + b
d.) (a – b) + ( c – d)
e.) a – b – c – d​

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.