SOLUTION: I have a project due tomorrow. I am to do this equation by substitution and elimination. Then graph the equation. I have done the substitution and elimination. Is there another way

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: I have a project due tomorrow. I am to do this equation by substitution and elimination. Then graph the equation. I have done the substitution and elimination. Is there another way      Log On


   

Question 583090: I have a project due tomorrow. I am to do this equation by substitution and elimination. Then graph the equation. I have done the substitution and elimination. Is there another way that I should do the linear equations to show for the graph?

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


You can use Gauss-Jordan Row Reduction:

Gauss-Jordan Row Reduction Tutorial

Or you can calculate the determinants and use Cramer's Rule:

Determinants Page 1

Determinants Page 2

Cramer's Rule

As for graphing, just take each of the equations and graph it as you ordinarily would -- just do it on the same set of coordinate axes.

John

My calculator said it, I believe it, that settles it
The Out Campaign: Scarlet Letter of Atheism