Answer:
y = 2x
Explanation:
The equation of a line passing through the origin is of the form
y = mx ( m is the slope of the line )
To calculate m use the slope formula
m = (y₂ - y₁ ) / ( x₂ - x₁ )
with (x₁, y₁ ) = (0, 0) and (x₂, y₂ ) = (1, 2) ← 2 points on the line
m =
=
= 2
y = 2x ← equation of line