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If the point ​(4,minus−​1) is a point on the graph of​ f, then​ f( __ ​)equals=​
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If the point ​(4,minus−​1) is a point on the graph of​ f, then​ f( __ ​)equals=​

User Paachi
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[1] Let's review some basic function notation first. Here's how to convert between a point and a function.


(x,y) \leftrightarrow f(x) = y

[2] So, for our problem, we have (4,-1). Then, f(4) = -1 using the conversion fact above.
User Sanch
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