This problem shows that infinite sets behave differ- ently than the finite ones considered in the previous problem. (i) find a function f: z-> z that is injective, but not surjective. (ii) find a function g: zz that is surjective, but not injective. - (iii) find a proper subset s of z (that is, s is not z itself) and a bijective function h: sz.

Determine the relationship of ab and cd given the following points

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?

Find two numbers if their sum is 91 and the ratio is 6: 7?