Answer: OPTION B
Step-by-step explanation:
The equation of a line that passes through the origin is the following:

Where "m" is the slope of the line.
By definition, Proportional relationships have the following form:

Where "k" is the Constant of proportionality.
Then, as you can notice, if you graph a Proportional relationship you will get a line that passes through the origin.
Therefore, based on the explained above, you can conclude that the option that shows a function that represents a Proportional relationship is the Option B.
Then, this is:

Assuming that you typed it wrong, meaning you meant 1cm=1.5 sq meters,
then the answer is 45 meters
just multiply the length and the width to get the area
so, 5cm= 7.5 m
4cm= 6 m
7.5m multiplied by 6m is 45sq m
John spent 30 on six cars 5 times 6 = 30
What is the system? I don't see it here.
Answer:
-100
Step-by-step explanation: