Find the value of the function when

Question

. (1 point)
y = 3x − 21
2
x = 4
y =

Answer 1

To find the value of the function \( y = 3x - 21 \) when \( x = 4 \), we can substitute \( x \) with \( 4 \) in the equation:

\[ y = 3(4) - 21 \]

Now, calculate:

\[ y = 12 - 21 \]

\[ y = -9 \]

So, when \( x = 4 \), the value of \( y \) is \( -9 \).