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Need help in math

How does the slope of the line y=-x affect the graph?

Instructions says :
Think about how the graph changed as a result of changing the slope to a negative. Write several complete grammatically correct sentences describing how changing the slope to a negative number changes the graph. Be specific and detailed.
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The negative slope means that you move downhill as you go from left to right. Think of it as a mountain slope and the point on the line slides downhill. The direction of movement is from left to right. To be technical, in this case you will have a rise of -1 indicating you go down 1. At the same time, you go to the right 1 unit

rise/run = -1/1 = -1 = slope

So that's a more technical breakdown of the slope of -1
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