Solving Systems by Substitution?  TOPIC_SOLVED

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Solving Systems by Substitution?

Postby Nessarose17 on Wed Jan 26, 2011 5:19 am

Hi, in algebra we are doing solving systems by substitution, and i thought I got it, but apparently not... I'm stuck on this problem. Can someone take me step by step through it please? Thank you so much! :D :popcorn:

Solve each system by substitution. Check your answer.
y=x-2
y=4x+1
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Postby stapel_eliz on Wed Jan 26, 2011 12:15 pm

Nessarose17 wrote:Solve each system by substitution. Check your answer.
y=x-2
y=4x+1

Each equation is solved for "y=". So the steps are:

Pick one of the equations, and plug what y equals into the other equation, in place of y. Solve the resulting linear equation for the value of y. Then plug this value back in to either of the original equations, and solve for the value of y.

If you get stuck, please reply showing how far you got in following these steps. Thank you! :wink:
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Re: Solving Systems by Substitution?

Postby Nessarose17 on Thu Jan 27, 2011 3:57 am

Ok I think I got it! Thank you so much! :wave:
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