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Mathematics 16 Online
OpenStudy (anonymous):

algebra

OpenStudy (anonymous):

Directrix (directrix):

Look at the x values. Do you see the same x (think 3) going to two different values of y for the same x of 3?

OpenStudy (anonymous):

no

Directrix (directrix):

Look again. See attachment.

Directrix (directrix):

In a function, an x of that function can go to at most one y for that value of x. Here, the 3 goes to 6 and the 3 also goes to 2.

Directrix (directrix):

So, is the relation a function?

Directrix (directrix):

Relation means a set of ordered pairs. Do not focus on that. Focus on function.

OpenStudy (anonymous):

false

Directrix (directrix):

That is correct.

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