Matt considers whether or not the amount of time students study for a test and the grade on the test are related. he determines that the more they study the higher grade they will get. what type of slope would the line of best fit have? a) negative b) positive c) undefined d) zero

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.