You pay $13.50 per movie ticket.

Define each variable and write an equation to represent the relationship between the number of movie tickets bought and the total cost

Let's define the variables:

x = number of movie tickets bought
y = total cost

The equation to represent the relationship between the number of movie tickets bought and the total cost is:
y = 13.50x

Let's define the variables:

- "x" represents the number of movie tickets.
- "y" represents the total cost of the movie tickets.

Now let's write the equation:

The total cost (y) can be found by multiplying the number of movie tickets (x) by the cost per ticket ($13.50).

So, the equation is:

y = 13.50x

Let's define the variables first:

- Let's call the number of movie tickets bought "x".
- Let's call the cost per movie ticket "$13.50".
- Let's call the total cost of all movie tickets "y".

Now, let's write an equation to represent the relationship between the number of movie tickets bought and the total cost. Since the cost per movie ticket is $13.50, the equation will be:

y = 13.50x

In this equation, "x" represents the number of movie tickets bought and "y" represents the total cost of all movie tickets.