Inverse Functions, Quadratic Formula Exam

Mathematical Equivalence

ON

Mathematical Equivalence

ON

 $f\left(x\right)=\frac{8x-3}{5}$  
Find  $f^{-1}\left(x\right)$  

•  $5\left(8x+3\right)$  

•  $\frac{5x}{8}+3$  

•  $\frac{5\left(x+3\right)}{8}$  

•  $\frac{5x+3}{8}$  

The inverse of the function f(x) is written as ... ​ (a)  

Determine the values of a, b, and c for the quadratic equation:

4x² – 8x = 3

• a = 4, b = -8, c = 3

• a = 4, b =-8, c =-3

• a = 4, b = 8, c = 3

• a = 4, b = 8, c = -3

Use the quadratic formula to solve 2x² + 2x - 12.

What are the 2 Solutions?

​ ​ ​ ​ ​

• 3

• -3

• 2

• -3/2

• 3/2

Solve Using the Quadratic Formula  x² + 4x - 40 = -8

• -8

• 5

• 4

• 8

• -4

If the discriminant equals 0, then the quadratic has:

• 1 Solution

• 2 Real Solutions

• No solutions

• 2 Imaginary Solutions

• 1 Real Solution, and an Imaginary Solution named Harvey.

If the discriminant is negative, you will have....

• two real solutions
• two irrational solutions
• two imaginary solutions
• one solution

Name "c" for the equation
4x² - 5x + 7 = 10