Answer:
Option D
Explanation:
The range of a function is the complete set of all possible resulting values of the dependent variable (y, usually), after we have substituted the domain.
In plain English, the definition means:
The range is the resulting y-values we get after substituting all the possible x-values.
How to find the range
1.The range of a function is the spread of possible y-values (minimum y-value to maximum y-value)
2. Substitute different x-values into the expression for y to see what is happening. (Ask yourself: Is y always positive? Always negative? Or maybe not equal to certain values?)
3. Make sure you look for minimum and maximum values of y.
4. Draw a sketch! In math, it's very true that a picture is worth a thousand words.