### All Precalculus Resources

## Example Questions

### Example Question #1 : Absolute Value Functions

Which of the following is a point on the following function?

**Possible Answers:**

**Correct answer:**

One way to approach this problem would be to plug in each answer and see what works. However, I would be a little more strategic and eliminate any options that don't make sense.

Our y value will never be negative, so eliminate any options with a negative y-value.

Try (0,0) really quick, since it's really easy

The only point that makes sense is (5,83), therefore it is the correct answer

### Example Question #2 : Absolute Value Functions

Evaluate:

**Possible Answers:**

**Correct answer:**

Cancel the absolute value sign by separating the function into its positive and negative counterparts.

Evaluate the first scenario.

Evaluate the second scenario.

The correct answer is:

### Example Question #3 : Absolute Value Functions

Let

What is when ?

**Possible Answers:**

**Correct answer:**

We evaluate for

Because the absolute value bars turn any number inside positive we get

### All Precalculus Resources

### Incompatible Browser

Please upgrade or download one of the following browsers to use Instant Tutoring: