Which graph represents a proportional relationship

Name the quadrilaterals that have four equal sides.

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.