Georges asked five of his friends how long they studied for the last math test and what grade they received. He found a linear regression equation for the data to be y = 9.6x + 65.8. What does the 65.8 mean in the context of this equation?
Responses
A If they studied 0 hours they would earn a 65.8.If they studied 0 hours they would earn a 65.8.
B The lowest grade of his five friends was a 65.8.The lowest grade of his five friends was a 65.8.
C The lowest grade they could receive on the test was a 65.8.The lowest grade they could receive on the test was a 65.8.
D For every hour they studied their grade would go up 65.8 points.