Answer:
A proportional relationship is "two quantities vary directly with each other."
Example:
The amount of gasoline you fill in your car and the amount you pay is a proportional relationship.
If 1 gallon of gasoline is $3, then the cost of 3 gallons of gasoline is $9.
Step-by-step explanation:
A relationship is between two quantities.
A proportional relationship is "two quantities vary directly with each other."
Say, if the quantity "x" increases, then the associated quantity "y" also increases.
For example,
y = 2x
Let's find the data.
x y
0 0
1 2
2 4
3 6
As you can see when the value of "x" increases, the value of "y" also increases.
This is called proportional relationship.
Example:
The amount of gasoline you fill in your car and the amount you pay is a proportional relationship.
If 1 gallon of gasoline is $3, then the cost of 3 gallons of gasoline is $9.
