SOLUTION: Why does y=2x and y=-2x look the way they do graphically? why is it that plugging into a calculator the graph of y=2x looks like a line. And the y=-2x is a line but inverted? How d
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-> SOLUTION: Why does y=2x and y=-2x look the way they do graphically? why is it that plugging into a calculator the graph of y=2x looks like a line. And the y=-2x is a line but inverted? How d
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Question 1003211: Why does y=2x and y=-2x look the way they do graphically? why is it that plugging into a calculator the graph of y=2x looks like a line. And the y=-2x is a line but inverted? How do I know what graphs are suppose to look like?
How does this work?
Thanks Answer by fractalier(6550) (Show Source):
You can put this solution on YOUR website! The number in front of the x is the slope of a line. If it is positive, you will have a line going upward (as you ove left to right), like the slope of a hill. If it is negative, you will be "walking" downhill.
Thus y = 2x has a steep uphill slope of 2 (we rise 2 for every 1 we go to the right) and y = -2x has the same slope but downhill.
