Question

If f(x) = -4x - 1, find f(-2)

Answer 1

it means :
f(-2) = -4(-2) - 1 = 8 - 1 = ....

Answer 2

Look at the function -->f(x) = -4 x - 1.

What does f do to x?

It multiplies x by negative four and then subtracts one.

Answer 3

For x -2, the function does the following:

It multiplies (-2) by negative four and then subtracts one.

So, what is the output?:

Answer 4

so it would be negative 7

Answer 5

>so it would be negative 7 No. Recalculate.

f(-2) = -4 * (-2) - 1

f(-2) = +8 - 1

f(-2) = ?

Answer 6

What is 8 minus 1?