kaurjazzmine6
kaurjazzmine6 kaurjazzmine6
  • 23-07-2020
  • Mathematics
contestada

help me with this I'm stuck I will give you branliest​

help me with this Im stuck I will give you branliest class=

Respuesta :

jimrgrant1 jimrgrant1
  • 23-07-2020

Answer:

d = 9

Step-by-step explanation:

Use the slope formula to calculate m and equate to m = 3

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = A(4, 6) and (x₂, y₂ ) = B(d, 21)

m = [tex]\frac{21-6}{d-4}[/tex] = [tex]\frac{15}{d-4}[/tex] = 3 ( multiply both sides by d - 4 )

3(d - 4) = 15 ( divide both sides by 3 )

d - 4 = 5 ( add 4 to both sides )

d = 9

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