Question

The equation y=9x represents the total cost y for x movie tickets.

A.In this situation,which quantity is dependent and which is
independent? Justify your answer.

B.Eight friends want to go see a movie.what would the total cost be,explain how u found the answer.

Answer 1

A) y or total cost is the dependent variable and x which is the number of movie tickets is the independent variable. Y is called dependent because its value depends on the value of x.

B) So 8 is the number of tickets which is X. So x=8. The total cost y will be: 8x9= 72