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Murrr4er [49]
3 years ago
5

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

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
4 0

Answer:

The value of r is 16

Step-by-step explanation:

<u><em>The correct question is</em></u>

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=\frac{y2-y1}{x2-x1}

we have the points

(r, 7), (11, 8)

substitute the values

m=\frac{8-7}{11-r}

m=\frac{1}{11-r}

Remember that

m=-\frac{1}{5}

equate the equations

\frac{1}{11-r}=-\frac{1}{5}

solve for r

Multiply in cross

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

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