Which parts of △DEF can be determined using only the Law of Cosines?

Find the roots of the equation below. x^2 - 6 + 9 = 0

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? )

What would the rule be for the reflection of y=-3