At which point do the lines $s=9-2t$ and $t=3s+1$ intersect? Give your answer as an ordered pair in the form $(s, t).$
S=9-2t
S=9-2(3s+1)
S=9-6s-2
7S=7
S=1
(Use the Substitution Property)
t=3S+1
t=3+1
t=4
Therefore, the answer is (1,4)
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