What's the difference between 1 fifth of 10 and 5 times 10

Which graph represents the following piecewise defined function?

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? )

Askateboard ramp is in the shape of a right triangle what is the height of the ramp