Which input value produces the same output value for the two functions on the graph?

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

How can you tell when x and y are not directly proportional?