Which option shows the correct first step when solving the following system by elimination?*
x - 3y = 9
-x + 2y = 1

Diana is painting statues she has 7/8 of a liter of paint each statue requires 1/20 of a liter of paint how many statues can she paint?

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )