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qwelly [4]
3 years ago
5

(8,y) and (-2,4);slope =-1/5

Mathematics
1 answer:
Ivan3 years ago
6 0

Answer:

y = 2

Step-by-step explanation:

Calculate the slope m and equate to - \frac{1}{5}

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 2, 4) and (x₂, y₂ ) = (8, y)

m = \frac{y-4}{8+2} , that is

m = \frac{y-4}{10} = - \frac{1}{5}

Multiply both sides by 10 to clear the fractions

y - 4 = - 2 ( add 4 to both sides )

y = 2

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