Posted by **scooby9132002** on Saturday, July 4, 2009 at 1:05am.

determine whether (-5,1) is a solution of 9x-9y= -3

I said no am i correct?

solve by elimination mehtod. 2x+3y=4, 4x+6y=8 type as ordered pair, type N for no solution, I for many.

I chose I am I correct?

- math(am i right) -
**Reiny**, Saturday, July 4, 2009 at 7:22am
How did you determine that the answer was "no" to the first one?

BTW. you were right.

For the second, what happens if you multiply your first equation by 2 ?

- So how many lines are you intersecting by solving ?

- Wouldn't any point that works for the first also work for the second ?

- How many points are on the first line ?

So .....

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