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Determine whether the equation specifies y as a role of x. 0 votes

Determine even if it is the equation defines y as a function of x.

You are watching: Determine whether the following equation defines y as a function of x.

y = 2x2 - 3x + 4

functionsevaluating-functionsaskedJan 8, 2015in PRECALCULUSby anonymous
please log in or it is registered to add a comment. you re welcome log in or register to price this question. 1 answer 0 votes

Step 1:

The equation is

*
.

To identify whether the equation

*
, which defines the quadratic expression is a function.

The equation

*
tells us to take an input
*
.

For any kind of value that

*
, we acquire only one value for
*
.

Step 2:

Consider

*
.

Substitute

*
in
*
.

*

Consider

*
.

Substitute

*
in
*
.

*

For two various values that

*
, we gain two different values because that
*
.

Hence, the equation specifies

*
as a role of
*
.

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Solution :The equation specifies

*
together a duty of
*
.

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