Question

in the function rule, y = 3x - 9, what is y when x = 5? y = ?

Explanation:

Step1: Substitute x=5 into the function

We have the function \( y = 3x - 9 \). Substitute \( x = 5 \) into it, so we get \( y = 3\times5 - 9 \).

Step2: Calculate the value

First, calculate \( 3\times5 = 15 \). Then, subtract 9 from 15: \( 15 - 9 = 6 \).

Answer:

6