Let $t$ be TNYWR.

The lines with equations $y=12$ and $y=2 x+t$ intersect at the point $(a, b)$. What is the value of $a$ ?
Since the two lines intersect at $(a, b)$, then these coordinates satisfy the equation of each line.

Therefore, $b=12$ and $b=2 a+t$.

Since $b=12$, then $12=2 a+t$ or $2 a=12-t$, and so $a=6-\frac{1}{2} t$.

Since the answer to (b) is 4 , then $t=4$, and so $a=6-2=4$.

ANSWER: $4,4,4$