How do I solve for speed?

10. CalC3106a 10 pts possible A point is moving on the graph of xy = 7. When the point is at (1, 7), its a-coordinate SUBMIT ANSWER is increasing at a rate of 1 units per second. What is the speed of the y-coordinate at speed = -7 units/sec, decreasing y that moment and in which direction is it mov- ing? 0 2. speed = -9 units/sec, increasing y 1 3. speed = -8 units/sec, decreasing y 0 4. speed = 7 units/sec, decreasing y 5. speed = 9 units/sec, increasing y 6. speed = 8 units/sec, increasing y