College Math CLEP Prep Practice Exam

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

Unlock your mathematical potential and conquer the College Math CLEP exam with ease! Introducing our powerful College Math CLEP Prep Practice Exam, your ultimate tool for exam readiness.

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.

What is the inverse of y = 5x - 4?

y = 5x + 4
y = 5x/4
y = 4/5x
y = 4/5x + 4

The correct answer is: y = 4/5x

The inverse of y = 5x - 4 is y = (x + 4)/5. This is because to find the inverse, we need to switch the x and y variables and solve for y. In this case, we can first add 4 to both sides, giving us 5x = y + 4. Then we divide both sides by 5, giving us x = (y + 4)/5. This is the inverse function, where x is now the input and y is the output. Option A, y = 5x + 4, is the original function and not the inverse. Option B, y = 5x/4, is the correct inverse but in a different form since we can also write it as y = (x/4)*(5/1) or y = (5/4)x.