All Precalculus Resources
Example Questions
Example Question #1 : Special Functions
Which of the following is a point on the following function?
Possible Answers:
Correct answer:
Explanation:
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 : Special Functions
Evaluate:
Possible Answers:
Correct answer:
Explanation:
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 #2 : Special Functions
If
, then what is the value of when ?
Possible Answers:
-7
-13
20
7
13
Correct answer:
13
Explanation:
We evaluate for
Since the absolute value of any number represents its magnitude from
and is therefore always positive, the final answer would be
Sandra
Certified Tutor
Certified Tutor
Idaho State University, Bachelor in Arts, Chemistry. Utah State University, Master of Science, Physical Chemistry.
All Precalculus Resources
Popular Subjects
Physics Tutors in Houston, Computer Science Tutors in Los Angeles, Chemistry Tutors in Boston, ISEE Tutors in Boston, Computer Science Tutors in Denver, GMAT Tutors in San Francisco-Bay Area, Algebra Tutors in Washington DC, ISEE Tutors in Denver, French Tutors in Seattle, LSAT Tutors in Seattle
Popular Courses & Classes
SSAT Courses & Classes in Seattle, LSAT Courses & Classes in Miami, MCAT Courses & Classes in Boston, SAT Courses & Classes in Phoenix, ISEE Courses & Classes in Chicago, ISEE Courses & Classes in Houston, Spanish Courses & Classes in Miami, Spanish Courses & Classes in Houston, SSAT Courses & Classes in San Francisco-Bay Area, ACT Courses & Classes in San Diego
Popular Test Prep
MCAT Test Prep in San Diego, GMAT Test Prep in Washington DC, LSAT Test Prep in Denver, ACT Test Prep in San Diego, GMAT Test Prep in San Francisco-Bay Area, GRE Test Prep in Houston, ACT Test Prep in Boston, MCAT Test Prep in Philadelphia, ISEE Test Prep in Boston, SAT Test Prep in Chicago
