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Math·Algebra·Linear functions

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For the linear function $p$, $p(c)=-6$ where $c$ is a constant, $p(3)=26$, and the slope of the graph of $y=p(x)$ in the xy-plane is 8. For the linear function $t$, $t(c)=-7$ and $t(4)=38$.

What is the slope of the graph of $y=t(x)$ in the xy-plane?

A

-1

B

2

C

8

D

9