You can put this solution on YOUR website! Sketch a graph of x+2y=-10
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It's a straight line, so you need 2 points.
x + 2y = -10
x = 0 --> y = -5: (0,-5) is a point
y = 0 --> x =-10: (-10,0) is a point
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Plot the points.
Draw a line thru them.