Rectangle ABCD has the following vertices A (-1,9) B (9,4) C (4,-6) D (-6,-1) is rectangle ABCD a square and why?

If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes

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

What is always true when two whole numbers are subtracted?