Question 1204537
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In the Desmos graphing calculator
<a href="https://www.desmos.com/calculator">https://www.desmos.com/calculator</a>
there are input boxes on the left side. 
If the boxes are hidden, click on the double arrows to have the boxes show up.
Each box represents a different equation to graph. 


Type the equations exactly as given and two lines should show up as indicated here.
<a href="https://www.desmos.com/calculator/sjasvdwmmo">https://www.desmos.com/calculator/sjasvdwmmo</a>
The solution to this system is where the two lines cross.
This is at the location <font color=red size=4>(-2, 12)</font>
Click the point of intersection in Desmos to have the coordinates show up.
In some cases, you may have to click more than once.


The solution (-2,12) means x = -2 and y = 12 pair up together.
Let's check these x and y values with the 1st equation.
y = -6x
12 = -6*(-2)
12 = 12
That works out. 
Now try the other equation.
y = -4x+4
12 = -4(-2)+4
12 = 8+4
12 = 12
That works too.
Both equations have been shown to be true when plugging in x = -2 and y = 12.
The solution is confirmed algebraically.
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