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34 votes
A line with a slope of – 1/6 passes through the points (1,3) and (7,f). What is the value of f?

User SupaCoco
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1 Answer

13 votes
13 votes


\quad \huge \quad \quad \boxed{ \tt \:Answer }


\qquad \tt \rightarrow \: f = 2

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\large \tt Solution \: :

Let's consider two points (1 , 3) and (7 , f), now we can write the slope (m) of line in form of these points as :


\qquad \tt \rightarrow \: m = \cfrac{y2 - y1}{x2 - x1}


\qquad \tt \rightarrow \: - (1)/(6) = (f - 3)/(7 - 1)


\qquad \tt \rightarrow \: - (7 - 1) = 6(f - 3)


\qquad \tt \rightarrow \: - 6 = 6(f - 3)


\qquad \tt \rightarrow \: f - 3 = - (6)/(6)


\qquad \tt \rightarrow \: f - 3 = - 1


\qquad \tt \rightarrow \: f = - 1 + 3


\qquad \tt \rightarrow \: f = 2

Value of f is 2, so the point is : (7 , 2)

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

User Qiang Li
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