Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


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.


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.
0 0 0
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.
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts