Question 23700
There is no equal sign in the second equation, so it can't be graphed.  I'll take a guess, but you may need to re-post the question.


3x-y = 7 is in standard form, so use the two intercepts method to graph it.
Let x =0, then -y = 7, so y =-7
Let y =0, then 3x = 7, so x= {{{7/3}}} or approximately 2.3


I'll take a guess that the second equation was supposed to be y =3x - 7.  This is in slope-intercept form, so the y-intercept is -7, and the slope is 3/1.  


Graph these two lines and it should look like this:

{{{graph (400,400, -10,10,-10,10, 3x-7, 3x-7)}}}

As you can see from this graph, the two lines are actually the same line.  The solution is the entire line.  There are infinitely many solutions.


R^2 at SCC