Question

PLS HELP

Answer 1

Answer:

C = -5

Step-by-step explanation:

Functions

F(x) is defined as:

$\displaystyleF(x)=\frac{C-x}{D-x}$

We know F(-2) is undefined. It comes from the fact that the denominator is 0 for this value of x, thus:

D - (-2) = 0

Solving:

D = -2

Substituting:

$\displaystyleF(x)=\frac{C-x}{-2-x}$

We also know F(-1) = 4:

$\displaystyle \frac{C-(-1)}{-2-(-1)}=4$

$\displaystyle \frac{C+1}{-2+1}=4$

$\displaystyle \frac{C+1}{-1}=4$

Multiplying by -1

C + 1 = -4

Solving for C:

C = -5