Use the following function rule to find f(–1).

f(x) =
–3 −
10
x

f(–1) =

1 answer

To find \( f(-1) \) using the function rule \( f(x) = -3 - \frac{10}{x} \), we can substitute \( -1 \) for \( x \).

So,

\[ f(-1) = -3 - \frac{10}{-1} \]

Calculating the fraction:

\[ f(-1) = -3 - (-10) \]

This simplifies to:

\[ f(-1) = -3 + 10 \]

Therefore:

\[ f(-1) = 7 \]

So, the final answer is:

\[ f(-1) = 7 \]