SOLUTION: Determine whether the equation defines y as a function of x.
x+y=9
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Question 975364: Determine whether the equation defines y as a function of x.
x+y=9
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
rewrite as y=-x+9
y is a function of x. For every x, there may be only one value of y.
If you draw a vertical line through the graph, it touches the graph in only one point.
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