An equation to represent the relationship between miles driven (y) and gallons of gas (x) used is 
- Let the miles driven be y.
- Let the gallons of gas be x.
<u>Given the following data:</u>
Distance = 28 miles
To write an equation to represent the relationship between miles driven (y) and gallons of gas (x) used:
<h3>How to solve a word problem.</h3>
In this exercise, we would assign a variable to the parameters stated in the question in order to write an equation to represent the relationship between miles driven (y) and gallons of gas (x) used by Weston’s car during the trip.
Also, the amount of gas used up by a car is <u>directly proportional</u> to the distance traveled by the car. Mathematically, this is given by this expression:

Substituting the given parameters into the formula, we have;

<u>Note:</u> k is the constant of proportionality.
Read more on direct proportion here: brainly.com/question/12931911
Answer:
Step-by-step explanation:
First you would plot the points- (0,2), (1,4), (2,6), (3,8)
Then if the points make a straight line when you connect them then it makes it a linear equation
To know if it is proportional or not you take the y points and put them over their x points, and if all of them end up with the same number than it is proportional
2/0=0, 4/1=4, 6/2=3, 8/3=8/3, therefore it is not proportional
Answer:
$15
Step-by-step explanation:
He had $20 and he spent
of that in baseball cards, that is

So, he spent $15 in baseball cards.
B. miles because its a longer distance with leads to a smaller number