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tangare [24]
3 years ago
5

6. If f(x) = –8 – 5x, what is f(–4)? f(–4) = 12 f(–4) = –28 f(–4) = –12 f(–4) = 28

Mathematics
2 answers:
ELEN [110]3 years ago
8 0

For this case we have a function of the form:

y = f (x), where:

f (x) = - 8-5x

We want to know the value of the function when x = -4, that is, f (-4).

Substituting we have:

f (-4) = - 8-5 (-4)

We have by law of multilplication of signs that:

- * - = +\\f (-4) = - 8 + 20

Different signs are subtracted and the sign of the major is placed.

f (-4) = 12

Answer:

Option A

Ivan3 years ago
7 0

Answer:

f (-4) = 12.

Step-by-step explanation:

If f(x) = –8 – 5x, what is f(–4)?

substitute -4 to ur value of x

that is f(-4)= -8 -5(-4)

f(-4) = -8+20

f(-4) =12.

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