kowalskifilip16
kowalskifilip16 kowalskifilip16
  • 22-10-2020
  • Mathematics
contestada

please can you help me

please can you help me class=

Respuesta :

jimrgrant1 jimrgrant1
  • 22-10-2020

Answer:

y = - x + 9

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

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

with (x₁, y₁ ) = (0, 9) and (x₂, y₂ ) = (9, 0) ← 2 points on the line

m = [tex]\frac{0-9}{9-0}[/tex] = [tex]\frac{-9}{9}[/tex] = - 1

The line crosses the y- axis at (0, 9) ⇒ c = 9

y = - x + 9 ← equation of line

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