Using a sheet of graph paper, solve the following system of equations graphically. Be sure to show any work, use a straight edge, and be neat. When you are finished, enter the solution set in the box below and turn in your graph paper to your teacher.

x + y = 0
x - y + 2 = 0

I do not understand what to do?

Question

Using a sheet of graph paper, solve the following system of equations graphically. Be sure to show any work, use a straight edge, and be neat. When you are finished, enter the solution set in the box below and turn in your graph paper to your teacher.

x + y = 0
x - y + 2 = 0


I do not understand what to do?

solomonzelman · Answer

$\Large\color{red}{  \bf x + y = 0   }$
$\Large\color{red}{  \bf x - y  = -2   }$

solomonzelman · Answer

If it doesn't seem logical to just see the answer... you can add the equations, solve for x, and then find the y.

solomonzelman · Answer

Sorry, graphically-:(

graph each equation, and the point where they intersect is the solution.

anonymous · Answer

i do not understand how to graph it when it is in the terms x+y=0 and x-y=-2 @SolomonZelman

solomonzelman · Answer

$\Large\color{red}{  \bf x+y=0 ~~~~~~~~~~ x-y=-2   }$

          $\Huge\color{blue}\downarrow$                                        $\Huge\color{blue}\downarrow$
$\Large\color{red}{  \bf y=-x ~~~~~~~~~~~~ -y=-x-2   }$
                                                       $\Huge\color{blue}\downarrow$
                            $\Large\color{red}{  \bf~~~~~~~~~~ y=x+2   }$

solomonzelman · Answer

graph each equation, it will not be hard, promise :)

anonymous · Answer

okay thanks!!! @SolomonZelman