1.if the centroid of a triangle abc is the origin, point b and c are respectively ( 0,6,0 ) and ( 0,0,6 ) then the point a is a. ( 0,-6,0) b. ( 0,0,-6) c. ( 0,6,6,) d. ( 0,-6,-6)
2. the ratio in which the line joining the points ( a, b,c ) and ( -a,-c,-b ) is divided by the xy plane is :
a. a: b
b. b: c
c. c: a
d. c: b

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?