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Which of the following is not an equation of a simple, even polynomial function? (Select all to apply.)

y = | x |
y = x2
y = x3
y = -x2

Need Help.

Respuesta :

mkersten

Wouldn't it be y = | x |? I am not 100% positive but I'm pretty sure that you need to have a least one value. Again not 100% sure

Answer:

[tex]y=x^3[/tex]

Step-by-step explanation:

A function is an even polynomial function when f(-x) is equal to f(x)

Lets check each option, replace x with -x and see whether we get same y equation

[tex]y=|x|[/tex], Replace x with -x

[tex]y=|-x|=x[/tex], for any x value the value of y is positive always. So it is an even function

[tex]y=x^2[/tex]

[tex]y=(-x)^2=x^2[/tex] same as the given equation . So it is an even function

[tex]y=x^3[/tex]

[tex]y=(-x)^3=-x^3[/tex] It is not same as the given equation . So it is not an even function

[tex]y=-x^2[/tex]

[tex]y=-(-x)^2=-x^2[/tex] same as the given equation . So it is an even function

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