Question

A function has the function rule y = x - 7. If the input is 4, what is the output?

A.3
B.-3
C.11
D.-11

Answer 1

\(\large \begin{array}{llll}
y = &x - 7\\
\uparrow &\uparrow \\
output&input\\
\downarrow&\downarrow\\
\color{red}{ \square ?}=&4-7
\end{array}\)