Question

3y=-6x+27
y=-2x+12
is this consistent?
inconsistent?
Dependent?

Answer 1

can someone please help me? im so lost

Answer 2

Did you try to solve it?

Answer 3

Replace y in the first equation with -2x+12 from the second equation and see what you get.

Answer 4

i got -6x+36=-6x+27

Answer 5

so it would be inconsistent?

Answer 6

If you add 6x to both sides, you get 36=27 which is, of course, ridiculous. And it tells you that you are trying to find something that doesn't exist (the point of intersection of 2 parallel lines). So yes, there is no solution and the system is inconsistent.

Answer 7

okay so how about
6x-2y=18
3x+y=-4

Answer 8

I would multiply the second equation by 2 and then add the two equations. That would get rid of the y

Answer 9

so 6x+2y=-8 which would be inconsistent again?

Answer 10

6x+2y=-8
6x-2y= 18
12x=10
x=5/6

Answer 11

Did you add the two equations?

Answer 12

12x+4y=10