Respuesta :

Answer:

y = - x

Step-by-step explanation:

The equation of a line passing through the origin is

y = mx ( m is the slope )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (- 7, 7) and (x₂, y₂ ) = (0, 0)

m = [tex]\frac{0-7}{0+7}[/tex] = [tex]\frac{-7}{7}[/tex] = - 1

⇒ y = -x is the equation of the line


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