Question

in the function rule, $y = 2x + 3$, what is $y$ when $x = 4$?
$y = ?$

Explanation:

Step1: Substitute x = 4 into the function

We have the function \( y = 2x + 3 \). Substitute \( x = 4 \) into it, so we get \( y = 2\times4 + 3 \).

Step2: Calculate the value

First, calculate \( 2\times4 = 8 \), then add 3: \( 8 + 3 = 11 \).

Answer:

11