Respuesta :

The horizontal line has an equation x = a, where

a is the x-coordinate of any point lies on the line

Since the line passing through point (0, 0)

Which means x-coordinate of the point = 0

Then the equation of the line is x = 0

That means y-coordinate can be any number because x = 0 represented by the y-axis

So the function notation is f(x) = y

RELAXING NOICE
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