Question

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Answer 1

the first equation -x+2/9y=1
when x=-1 y is not 0

Answer 2

oh..

Answer 3

one second..

Answer 4

y must be equal to zero when x=-1

Answer 5

-(-1)=1
if you subtract 1 from both sides you get (2/9)y=0

Answer 6

What do you mean y=0?

Answer 7

-(-1)+(2/9)y=1
1+(2/9)y=1
(2/9)y=0
y must be zero

Answer 8

oh, sorry, it`s 1 not -1

Answer 9

-(1)+(2/9)y=1
(2/9)y=2
multiply both sides by 9
2y=18 divide both sides by 2
y=9

Answer 10

As you can see....by graphing...the 2 lines intersect at a decimal...not at x = -1 and y = 3 or something nice like that...instead they intersect at a fraction

Answer 11

And that fraction (intersection) is x = -1/3 and y = 3