8. complete this item. identify 1 and 2. select all that apply of the following terms: acute, right, obtuse, adjacent, vertical, complementary, supplementary. select all that apply!   acute right obtuse adjacent vertical complementary supplementary

the first one, all those points on the line just make a strait line.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,