You can
put this solution on YOUR website!Hi Natasha,
Finding x and y and writing them as an ordered pair (x,y) is what your teacher is looking for here.
With systems of equations there are three ways to solve it, graphing, substitution or elimination.
I'll show you elimination and graphing.
x + 3y = 0 and
2x - y= -7
Lets multiply both sides of the second equation by 3
6x-3y=-21
Now lets add the two equations
6x-3y=-21
x + 3y = 0
7x=-21
x=-3
We can then plug in -3 for x to find y
2*(-3)-y=-7
y=1
so your answer is (-3,1)
To graph we have to have the equations in slope intercept form
x + 3y = 0
3y=-x
y=-x/3
2x - y= -7
-y=-2x-7
y=2x+7
and we see they intersect at (-3,1)
