College Algebra CLEP Prep Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Gear up for success on the College Algebra CLEP exam with our comprehensive Prep Practice Exam! Whether you're a math whiz or need a little extra support, our resources are here to help you excel and earn college credit.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Find the inverse of the function y = x2 + 7x + 12.

y = -x2 - 7x - 12
y = 1 / (x2 + 7x + 12)
y = -1 / (x2 + 7x + 12)
y = x2 - 7x - 12

The correct answer is: y = x2 - 7x - 12

To find the inverse of a function, we switch the places of the x and y variables and solve for y. This means that the inverse of y = x2 + 7x + 12 is written as x = y2 + 7y + 12. Then, we solve for y by using the quadratic formula or by completing the square. Option A changes the sign of the quadratic term, which is incorrect. Option B and C include the negative sign on the entire function, when it should only be on the x term in the quadratic equation. Option D, the correct answer, keeps the quadratic term and moves the constant to the other side, which is the correct way to write the inverse function. Therefore, D is the correct option.