1 Answer

Smallpepperz · Answer 1 · 2023-10-16T11:32:59+0000

Answer:

49

Explanation:

By the definition of slope, as vertical change over horizontal change, we get

$-4=m = (\Delta y )/(\Delta x) = (r-1)/(-6-6) = -(r-1)/(12)$

By checking the first and the last step of that chain

$-4=-\frac {r-1}{12} \rightarrow r-1=48\rightarrow r= 49$

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