Answer:
y = x
Step-by-step explanation:
The equation of a line passing through the origin is
y = mx ( m is the slope )
Calculate m using the slope formula
m =
with (x₁, y₁ ) = (600, 200) and (x₂, y₂ ) = (0, 0) ← 2 points on the line
m = = = , then
y = x ← equation of line