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# Let f(x) = 12 over the quantity of 4x + 2. find f(-1).

**Solution:**

A function is a process or a relation that associates each element 'a' of a non-empty set A , at least to a single element 'b' of another non-empty set B.

A relation f from a set A (the domain of the function) to another set B (the co-domain of the function) is called a function in math.

Given, f(x) = 12 over the quantity of 4x + 2.

We have to find f(-1).

f(x) = 12/(4x + 2) —---------------- (1)

To find f(-1), put x = -1 in (1)

f(-1) = 12/(4(-1) + 2)

= 12/(-4 + 2)

= 12/(-2)

= -6

Therefore, f(-1) is -6.

## Let f(x) = 12 over the quantity of 4x + 2. find f(-1).

**Summary:**

Let f(x) = 12 over the quantity of 4x + 2. f(-1) = -6.

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