Asked by Ashley
Tell wether the relation is a function (4,5), (-3,2), (4,9), (-2,-3)
Answers
Answered by
Blake
No. the points (4,5) and (4,9) have two different y-values for the given x-value (4). this fails the vertical line test.
Answered by
bobpursley
at x=4, doesn't y have more than one value? Is that allowed in a function?
Answered by
Ashley
blake i understand what u are saying i just don't understand ur explanation
Answered by
Blake
try drawing a graph. in the definition of a function, an x value can only have one y value. since the x value of four has two y values (5 and 9), it can't be a function.
try going to wikipedia and searching for "function mathematics" if you're still having trouble. it has the definition and explains it with examples.
try going to wikipedia and searching for "function mathematics" if you're still having trouble. it has the definition and explains it with examples.
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