Question

the table shows the relationship between the total cost of movie tickets y and the amount of people x who attended to movieX,5,6,7,8,9,y,35,42,49,56,63which best describes the function in the table from x = 5 to x = 9

Answer 1

We have the following:

we can calculate the function as follows:

the first thing is to calculate the slope of the function

$m=\frac{y_2-y_1}{x_2-x_1}$

replacing:

$\begin{gathered} m=\frac{63-35}{9-5} \\ m=7 \end{gathered}$

Therefore, the function is:

$y=7x$

Therefore, the cost of movie ticket is $7