Answer:
y=1/2x
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or
In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin
Verify each case
Step-by-step explanation:
Perimeter of figure =

It is approximately a thousand times larger
He has half of the money because 1-1/2 = 1/2