Domain and Range

What is the definition of 'Domain' in a function?

What is the definition of 'Range' in a function?

Does $$-3 \le y \le 5$$ describe domain or range?

Does $$-3 \le x \le 5$$ describe domain or range?

What is the Range of the linear function defined by the equation y = 2x + 1 for x in the interval [-3, 3]?

What is the range of the function defined by the equation y = x^2 - 4?

What variable typically represents the 'domain'?

What variable typically represents the 'range'?

If a function has a domain of $$[1, 5]$$ , what does this mean?

If a function has a range of $$[-2, 3]$$ , what does this mean?