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(r, 7), (11, 8), m = -1/5

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Answer:

The value of r is 16

Explanation:

The correct question is

Find out the value of r if the slope between the two ordered pairs is m=-1/5

we know that

The formula to calculate the slope between two points is equal to


m=(y2-y1)/(x2-x1)

we have the points

(r, 7), (11, 8)

substitute the values


m=(8-7)/(11-r)


m=(1)/(11-r)

Remember that


m=-(1)/(5)

equate the equations


(1)/(11-r)=-(1)/(5)

solve for r

Multiply in cross


-(11-r)=5\\r-11=5\\r=11+5\\r=16

User DamiToma
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