Question 671589
f(x) = -1/2x is the same as y = -1/2x
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Thinking of y = mx + b
The slope is {{{-1/2}}}
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Since the slope is negative, it is decreasing.
An increasing slope is positive and a constant slope is a vertical or horizontal line.
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{{{graph(300,200,-10,10,-10,10,(-1/2)x)}}}

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