Question

1. In order to join a dancing club, there is a $30 startup fee and a $4 monthly fee. Write an equation in slope-intercept form that models this situation.

Answer 1

y = 4x + 30

Explanation:

The $30 startup fee is the starting point, which means its the y-intercept. The $4 monthly fee is the linear equation.

Answer 2

y = 4x + 30

Explanation:

Let y be the total cost. Here the $30 startup is essential, so it shall be kept constant. $4 per month, this value will keep changing with months. Let the months be x.

solve for equation:

y = 4x + 30

[ slope intercept: y = mx + b ]