Answer:
y=4/15x
Step-by-step explanation:
The equation of a straight line is given by:
y = mx + b
Where m is the slope of the line,
b is the y-intercept
it passes trough point (0;0) ⇒ b=0 ⇒ y=mx
it passes trough point (7.5;2) ⇒ 2=7.5m ⇒ m=2/7.5=4/15
y=4/15x
