Answers

  • Brainly User
2016-07-09T14:56:01+08:00
If x is the side of the square, the area of a square is equal to x².

As a function of x, area is expressed as:

f(x) = x²   (or simply put y=x²)

In this function, x is the independent variable.  It means that when x (domain) changes, y (range) changes.

Example:  

If x = 4 meters, then:
f(4) = (4 m)²
f(4) = 16 m²

If x = 7 meters, then:
f(7) = (7 m)²
f(7) = 49 m²

It means that the area of a square is dependent on the measure of its side.
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A wire of length x is bent into the shape of a square.
That's a vague question, what about it? what's the length of the wire? are you looking for perimeter?
A wire of length x is bent into the shape of a square . Express the perimeter of the square as a function of x ??
f(x) = 4x. It means that the perimeter of a square is four times its side.
Thanks