Question 122276
Question:

What would the coordinates be when solving this system by graphing? 
3x + y = -1
9x + 3y = -3


Answer:


When you rewrite these equation in the form, y = mx +c, you can see that both the equations are same...

 {{{ y = -1- 3x }}}

 {{{ 3y = -1-3x}}} 

So when you graph these equations, both the lines overlap each other....

So there will be infinite number of solutions(coordinates..)

The graph will look like this.....


{{{ graph( 900, 900, -9, 9, -10, 10,  -1- 3x , -1-3x ) }}}


Hope you found the explanation useful....

Regards.


Praseena.