Which statements are true of functions? check all that apply.
1.all functions have a dependent variable.
2.all functions have an independent variable.
3.the range of a function includes its domain.
4.a vertical line is an example of a functional relationship.
5.a horizontal line is an example of a functional relationship.
6.each output value of a function can correspond to only one input value.

What is the difference between covalent bonds and ionic bonds? covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the electrical attraction between charged atoms. covalent bonds involve the transfer of electrons between charged atoms; ionic bonds involve the sharing of electrons between atoms. covalent bonds involve the sharing of pairs of electrons between atoms; ionic bonds involve the sharing of single electrons between atoms. covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the sharing of protons between charged atoms.