If you change the sign of the y coordinate how will the location change of the point

The following division is being performed using multiplication by the reciprocal find the missing numbers is 5/12 divided by x/3 equals 5/12 times x/10 equals 1/x

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

18 16 11 45 33 11 33 14 18 11 what is the mode for this data set