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A line with a slope of – 5 passes through the points (6,r) and (7, – 9). What is the value of r?

Sagot :

namwanjemacklineeliz

Answer:

r=-4

Step-by-step explanation:

[tex]gradient = \frac{change \: in \: y}{change \: in \: x} \\ - 5 = \frac{r - - 9}{6 - 7} \\ - 5 = \frac{r + 9}{ - 1} \\ - 5 \times - 1 = r + 9 \\ 5 = r + 9 \\ 5 - 9 = r \\ r = - 4[/tex]

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