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Mathematics 8 Online
OpenStudy (anonymous):

Determine whether the point (1, 7) is a solution of the system 2x + 6y = 50 10x + 0y = 10 by substituting the point into each equation.

hero (hero):

Are you sure it's 0y?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

If that's tru then they really gave you x and you can plug it right in the top to get y: \[10x=10\] \[x=1\]

hero (hero):

It's not a solution

OpenStudy (anonymous):

how u get that

hero (hero):

I graphed the first one, then I traced it to x = 1.

hero (hero):

You don't get 7 for y, you get 8

OpenStudy (anonymous):

can u like show the work

hero (hero):

You don't have a graphing calculator?

hero (hero):

I can do it here.....

OpenStudy (anonymous):

I agree with Hero. When you plug 1 into the first equation and subtract the x value the remainder is 48 which when divided by 6 is 8. \[(2)(1)+6(y)=50\] \[6y=48\] \[y=8\]

hero (hero):

yeah....there ya go

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