Question 611754
I don't understand how to graph.  x+y= -6
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Solve for y
x+y= -6
y = -x - 6
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It's a straight line, so you need 2 points.
Pick 2 values for x and find y
eg, x = 0, y = -6 --> the point (0,-6)
x = -6, y = 0 --> (-6,0)
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Plot the 2 points, draw a line thru them.