anonymous
  • anonymous
A pair of equations is shown below: y = 7x − 8 y = 5x − 2 Part A: Explain how you will solve the pair of equations by substitution or elimination. Show all the steps and write the solution. Part B: If the two equations are graphed, at what point will the lines representing the two equations intersect? Explain your answer.
Mathematics
schrodinger
  • schrodinger
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OnePieceFTW
  • OnePieceFTW
For substitution solve on of the equations for a variable, say x For the first equation solving for x would look like this: \[\frac{ y+8 }{ 7 } = x\] The take that value for x (y+8/7) and substitute it for x in the second equation. \[y = 5(\frac{ y+8 }{ 7 }) - 2\] and now you can solve it.

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