y = a + bx. where y is the dependent variable and x is the independent variable. In this case, the slope is equal to b and a is the intercept. When plotted on a graph, y is determined by the value of x. Regression equations are charted as a line and are important in calculating economic data and stock prices.
I just took a prom dress to be dry cleaned and they are charging $25.00.
1 Alterations for the hem of a satin dress would cost around $40 to $80 and an additional $30 or so to include the underskirt and around $20 each for an additional underskirt. 2  If you want to have your gowns shortened from the waist, it would cost about $50 to $120 or more depending on the number of layers the dress has.