Please help.What is the solution to the system of equations?

-3x-y+2z=-4

x-y+z=10

2x-3y+z=4

a.(–6, 6, 10)
b.(6, –6, 10)
c.(6, 6, 10)
d.(6, 6, –10)

Question

Please help.What is the solution to the system of equations?

-3x-y+2z=-4

x-y+z=10

2x-3y+z=4

	a.(–6, 6, 10)
	b.(6, –6, 10)
	c.(6, 6, 10)
	d.(6, 6, –10)

anonymous · Answer

C

jkbo · Answer

@Jack172 can you explain how you got C.

anonymous · Answer

x-y+z must be equal to 10, no other tuple but C satisfies this constraint, so it must be C

jkbo · Answer

alright thanks

anonymous · Answer

jkbo, which math class/level is this?

(if you want to learn how to do it rather than learn how to deduce from multiple choice)

jkbo · Answer

@Euler271 this is alg. 2

anonymous · Answer

i guess we use different names here. is this the algebra class with matrices or not yet?

jkbo · Answer

I dont know who that is but this is alg. 2

anonymous · Answer

have you seen matrices? like this:

|dw:1374469689249:dw|