(1 point) Which of the following sets are subspaces of R3? A. {(x, y,z) | 3x−2y=0,7x+4z=0} B. {(4x−9y,−6x−8y,5x+8y) | x, y arbitrary numbers } C. {(x, y,z) | x, y,z>0} D. {(x, y,z) | 6x−5y+9z=−4} E. {(x, y,z) | x+y+z=0} F. {(x, x−3,x+2) | x arbitrary number }

a

step-by-step explanation:

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i hope this is what you were looking for.

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b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right

ome people is not even worth it to even try it in the air.

step-by-step explanation: