Here are the representations of the numbers and inequalities on a number line: 1. Represent each of the following numbers on a number line: Numbers: -4, -2, 0, 2, 4 [<->] (-5,0) -- (5,0); in -4,-3,-2,-1,0,1,2,3,4 (,0.1) -- (,-0.1) node[below] ; [black] (-4,0) circle (2pt); [black] (-2,0) circle (2pt); [black] (0,0) circle (2pt); [black] (2,0) circle (2pt); [black] (4,0) circle (2pt); 2. Represent each of the following inequalities on a number line: a) -2 k 1 where k is a real number This means k is greater than or equal to -2 and less than or equal to 1. [<->] (-4,0) -- (3,0); in -3,-2,-1,0,1,2 (,0.1) -- (,-0.1) node[below] ; [black] (-2,0) circle (2pt); [black] (1,0) circle (2pt); [line width=1.5pt] (-2,0) -- (1,0); b) -5 < y -2 where y is a real number This means y is greater than -5 and less than or equal to -2. [<->] (-6,0) -- (0,0); in -5,-4,-3,-2,-1 (,0.1) -- (,-0.1) node[below] ; [white, line width=1.5pt] (-5,0) circle (2pt); % White circle for open interval [black] (-5,0) circle (2pt); % Black outline for open interval [black] (-2,0) circle (2pt); [line width=1.5pt] (-5,0) -- (-2,0); c) -2 < x < 4 where x is a real number This means x is greater than -2 and less than 4. [<->] (-3,0) -- (5,0); in -2,-1,0,1,2,3,4 (,0.1) -- (,-0.1) node[below] ; [white, line width=1.5pt] (-2,0) circle (2pt); % White circle for open interval [black] (-2,0) circle (2pt); % Black outline for open interval [white, line width=1.5pt] (4,0) circle (2pt); % White circle for open interval [black] (4,0) circle (2pt); % Black outline for open interval [line width=1.5pt] (-2,0) -- (4,0);