Answer:
[tex]\displaystyle \large{y=36}[/tex]
Step-by-step explanation:
We are given the equation [tex]\displaystyle \large{y=12x}[/tex]. To find y-value when or at x = 3, simply substitute x = 3 in which gives us [tex]\displaystyle \large{y=12(3)}[/tex] then evaluate the value as we obtain the y-value or final answer to the question:
[tex]\displaystyle \large{\boxed{y=36}}[/tex]
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