Solving Non-Linear Systems of Equations: A Simple Method

  • Context: High School 
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Discussion Overview

The discussion revolves around solving non-linear systems of equations, specifically focusing on four given equations and seeking a simple method for their resolution. The scope includes homework-related queries and methods for solving mathematical problems.

Discussion Character

  • Homework-related, Mathematical reasoning

Main Points Raised

  • One participant requests assistance with four specific equations, expressing confusion over how to solve them.
  • Another participant suggests a general method of substituting one equation into another to eliminate a variable and solve for the remaining one.
  • The original poster indicates they have attempted simpler versions of the problems but find the current ones puzzling.
  • There is a mention of a previous post in the homework section that did not receive a response, leading to the current inquiry.
  • A later reply questions the waiting time for responses, noting that response times may vary among participants.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the method to solve the specific equations, and the discussion remains unresolved regarding the original poster's confusion.

Contextual Notes

The original poster's understanding of the method for simpler equations may not directly apply to the current problems, indicating potential limitations in their approach.

bob4000
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how wud i do the following:

1.ax+by=c, y=2ax
2.y=mx+c, y=-mx+d
3.ax-by=1, y=x
4.some values for a,b and c for which equation does not represent a straight line, give egs

ive dun simpler versions of 1-3 but i haven't come across the above, so cud someone please tell me a simple method of working them out. thanks
 
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In general, plug one equation into the other to eliminate x or y from one equation. Solve for the remaining variable, take that solution and use it to determine the other variable.

These are pretty straight forward problems, give it a bit of thought and play with what I said above.

BTW: This should be posted in the homework forum.
 
i did post the same thing in the homework section but i didnt get a reply which i needed quite badly, so i came here instead. btw. i still don't understand how to do these particular questions, i have used tht method for slightly simpler questions, but this question just puzzles me
 
bob4000 said:
i did post the same thing in the homework section but i didnt get a reply.

How long did you wait for a reply? Don't forget that everybody here has different schedules than what you do.
 

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