Question

Inverse Relations and Functions
What is f(x)=2y-5 when x= -4?

Answer 1

You mean `What is f(x)=2x-5 when x= -4?`

Answer 2

Right?

Answer 3

yeah oops sorry

Answer 4

you want to know the value of f(x), when x=-4. Basically, the f(-4).
So plug in -4, instead of x into the function.

For inverse function,
y=2x-5
switch the x and the y,
x=2y-5
and solve for y....