Question

Find the output of the function y=−1/7x+8 when the input is 21. (1 point) The output of the function y=−1/7x+8 is when the input is 21.

Answer 1

To find the output of the function \( y = -\frac{1}{7}x + 8 \) when the input \( x \) is 21, we can substitute \( x = 21 \) into the equation:

\[
y = -\frac{1}{7}(21) + 8
\]

Calculating \( -\frac{1}{7}(21) \):

\[
-\frac{1}{7} \times 21 = -3
\]

Now, substituting this value back into the equation:

\[
y = -3 + 8
\]

Calculating the result:

\[
y = 5
\]

Thus, the output of the function when the input is 21 is:

\[
\boxed{5}
\]