Posted by Angie on Monday, March 30, 2009 at 5:24pm.
For this system, is the ordered pair a solution of both equations?How do you know?
(5,1) y=x+4
y=x6

Math  eStone, Monday, March 30, 2009 at 5:30pm
No, it is not because when you plug in x for the first equation you get 1 as y, not 1. And for the second equation when you plug in 5 for x you get 1 again, not 1.

Math  Redspider, Monday, March 30, 2009 at 5:33pm
aight the first thing u do is sub in the coordinates for x and y
so in the first equation ur x will be 5 and y will 1
then u solve the problem and both sides should be equal
so ur equation should look like this
1=5+4
1=9 as u can see both sides don't equal the same ( so it doesnt work for the first one, from there u have answered the question since it says doesn it work for BOTH solution and it doesnt)
but for practice u should try the second one
y=x+6
1=56
1=1( as u can see it doesnt work for this one either, so now u have ur answer that no it doesnt work)
p.s a solution that would work would be something like this
coordinates 1,5
y=x+4
y=5*x
cuz when u sub the x and the y they both equal 1

Math  Angie, Monday, March 30, 2009 at 5:58pm
thx
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