Tell whether the set is closed under the operation indicated.
if not closed, provide a counterexample.
1.) integers under addition 2.) integers under division
3.) whole numbers under subtraction 4.) irrational numbers under addition

Which of the following system of equation is not equal to the system of equations is not equal to the system of equations shown below

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis. how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1