Question

Your phone company charges $0.05 per minute for long distance calls. Write a direct variation model that relates the total cost x to the number of minutes y spent talking on the phone.

Idk how to do this?? Apparently, the formula is y=ax

Answer 1

According to the way you defined your variables .....
x = .05y

But in standard practise, x is the independent variable and y is the dependent variable,
that is, the cost depends on the number of minutes.
I would define x as the number of minutes and y as the cost, then
y = .05x

Answer 2

cost = rate * minutes

Answer 3

Thank you so much!