Which comparison is not correct?

-2 > -7
1 < -9
-3 > -8
6 > 5

What is the sum of these mixed numbers 2 1/8 + 4 3/8

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)