A basketball rolls off a deck that is 3. 2 m from the pavement. The basketball lands 0. 75 m from the edge of the deck. How fast was the basketball rolling? Seema lists the given values in a chart and determines that the unknown value is vx. A 2 column table with 2 rows. The first column is labeled Given with entries delta Y, a Subscript y Baseline, delta x. The second column is labeled Value with entries 3. 2 meters, negative 9. 8 meters per second squared,. 75 meters. Which describes Seema’s error? The y and x values are switched. The unknown is , not vx. The value for ay is not known. The value of y should be â€"3. 2 m.